There is a particular point in the odd mish-mash that makes up the Biblical book of First Chronicles. However, in order to show you clearly what that point was, we need to dig into why there is so much genealogical material as the beginning of the book. In fact the first ten chapters of the book are taken up with long lists of who was the child of whom, and who was the father of whom.
The first three verses : 1Adam, Sheth, Enosh, 2Kenan, Mahalaleel, Jered, 3Henoch, Methuselah, Lamech, are just a repetition of the line from Adam to Noah given originally in Genesis 5.
We next get a section I will call the "Generations of Noah": 4Noah, Shem, Ham, and Japheth. 5The sons of Japheth; Gomer, and Magog, and Madai, and Javan, and Tubal, and Meshech, and Tiras. 6And the sons of Gomer; Ashchenaz, and Riphath, and Togarmah. 7And the sons of Javan; Elishah, and Tarshish, Kittim, and Dodanim. 8The sons of Ham; Cush, and Mizraim, Put, and Canaan. 9And the sons of Cush; Seba, and Havilah, and Sabta, and Raamah, and Sabtecha. And the sons of Raamah; Sheba, and Dedan. 10And Cush begat Nimrod: he began to be mighty upon the earth. 11And Mizraim begat Ludim, and Anamim, and Lehabim, and Naphtuhim, 12And Pathrusim, and Casluhim, (of whom came the Philistines,) and Caphthorim. 13And Canaan begat Zidon his firstborn, and Heth, 14The Jebusite also, and the Amorite, and the Girgashite, 15And the Hivite, and the Arkite, and the Sinite, 16And the Arvadite, and the Zemarite, and the Hamathite. Compare this to Genesis 10 which it appears our Chronicler must have known in it's present form, as this is almost an exact word-for-word copy.
Now at this point, we leave all these various nations who came from Japheth and Ham behind, and focus solely on the children of Shem. 17The sons of Shem; Elam, and Asshur, and Arphaxad, and Lud, and Aram, and Uz, and Hul, and Gether, and Meshech. 18And Arphaxad begat Shelah, and Shelah begat Eber. 19And unto Eber were born two sons: the name of the one was Peleg; because in his days the earth was divided: and his brother's name was Joktan. 20And Joktan begat Almodad, and Sheleph, and Hazarmaveth, and Jerah, 21Hadoram also, and Uzal, and Diklah, 22And Ebal, and Abimael, and Sheba, 23And Ophir, and Havilah, and Jobab. All these were the sons of Joktan. Again compare this to Genesis 10 which it appears our Chronicler must have known in it's present form, as this is almost an exact word-for-word copy.
Next we have: 24Shem, Arphaxad, Shelah. 25Eber, Peleg, Reu, 26Serug, Nahor, Terah, 27Abram; the same is Abraham. Although it doesn't say it specifically, this is a list father-to-son, connecting Noah's son Shem, to his descendant Abraham. As such it comes from Genesis 11, although is this very short version. We can know this list comes from Genesis 11, as this is the only place Nahor is mentioned as the son of Serug in the entire Bible outside of this list. See also my article The Genealogy of Noah. Note that there are ten generations from Adam to Noah, with Adam the first generation and Noah the tenth. And there are ten generations from Shem to Abraham, with Shem the first generation and Abraham the tenth.
The next section tells us about the children of Abraham by his two concubines: 28The sons of Abraham; Isaac, and Ishmael. 29These are their generations: The firstborn of Ishmael, Nebaioth; then Kedar, and Adbeel, and Mibsam, 30Mishma, and Dumah, Massa, Hadad, and Tema, 31Jetur, Naphish, and Kedemah. These are the sons of Ishmael. 32Now the sons of Keturah, Abraham's concubine: she bare Zimran, and Jokshan, and Medan, and Midian, and Ishbak, and Shuah. And the sons of Jokshan; Sheba, and Dedan. 33And the sons of Midian; Ephah, and Epher, and Henoch, and Abida, and Eldaah. All these are the sons of Keturah. This section comes from Genesis 25, slightly rearranged.
The next section should be called the "Sons of Esau": 34And Abraham begat Isaac. The sons of Isaac; Esau and Israel. 35The sons of Esau; Eliphaz, Reuel, and Jeush, and Jaalam, and Korah.36The sons of Eliphaz; Teman, and Omar, Zephi, and Gatam, Kenaz, and Timna, and Amalek. This comes from Genesis 36, but in this shortened version the Chronicler has mistakenly make Timna, Eliphaz's concubine, into another son. The ending should probably have read "and Timna bore Amalek". This section continues, folling Genesis 36: 37The sons of Reuel; Nahath, Zerah, Shammah, and Mizzah.
The Chronicler suddenly introduces Seir without explanation. We can determine what is intended by comparing with Genesis 36. Esau's son Eliphaz had a concubine named Timna, by whom he had a son Amalek, doubtless ancestor of the Amalekites. Seir was Timna's father. So what this passage is telling us is that when Esau moved to Edom, he joined houses with Seir. So we next get a list of all the in-laws and cousins. 38And the sons of Seir; Lotan, and Shobal, and Zibeon, and Anah, and Dishon, and Ezar, and Dishan. 39And the sons of Lotan; Hori, and Homam: and Timna was Lotan's sister. 40The sons of Shobal; Alian, and Manahath, and Ebal, Shephi, and Onam. and the sons of Zibeon; Aiah, and Anah. 41The sons of Anah; Dishon. And the sons of Dishon; Amram, and Eshban, and Ithran, and Cheran. 42The sons of Ezer; Bilhan, and Zavan, and Jakan. The sons of Dishan; Uz, and Aran.
The next section is an intrusion, but it's an ancient one, picked up almost word-for-word from Genesis 36: 43Now these are the kings that reigned in the land of Edom before any king reigned over the children of Israel; Bela the son of Beor: and the name of his city was Dinhabah. 44And when Bela was dead, Jobab the son of Zerah of Bozrah reigned in his stead. 45And when Jobab was dead, Husham of the land of the Temanites reigned in his stead. 46And when Husham was dead, Hadad the son of Bedad, which smote Midian in the field of Moab, reigned in his stead: and the name of his city was Avith. 47And when Hadad was dead, Samlah of Masrekah reigned in his stead. 48And when Samlah was dead, Shaul of Rehoboth by the river reigned in his stead. 49And when Shaul was dead, Baalhanan the son of Achbor reigned in his stead. 50And when Baalhanan was dead, Hadad reigned in his stead: and the name of his city was Pai; and his wife's name was Mehetabel, the daughter of Matred, the daughter of Mezahab. 51Hadad died also. And the dukes of Edom were; duke Timnah, duke Aliah, duke Jetheth, 52Duke Aholibamah, duke Elah, duke Pinon, 53Duke Kenaz, duke Teman, duke Mibzar, 54Duke Magdiel, duke Iram. These are the dukes of Edom.
There is no indication of violence in the early passages when Esau goes to dwell on Mount Seir, but later in the Bible it's stated that God smote the Horims on Mount Seir in order that Esau's descendants might gain possession there. This name apparently comes from Lotan's son "Hori" above. However the list of Edomite kings does not match any of the names given in any of these genealogies. If we assign the first king of Israel, Saul to the time period 1100-1000 BC and we place Esau back in the time period 2000-1600 BC, then we can see that all of these "...that reigned in the land of Edom before any king reigned over the children of Israel....", of which there are eight, could easily fit in this gap with a lot of room to spare. So perhaps we can say simply that they must be descended from Esau in some way, without knowing precisely the connections between them all.
In the next chapter we see some new names, not elsewhere attested.: 1These are the sons of Israel; Reuben, Simeon, Levi, and Judah, Issachar, and Zebulun, 2Dan, Joseph, and Benjamin, Naphtali, Gad, and Asher. 3The sons of Judah; Er, and Onan, and Shelah: which three were born unto him of the daughter of Shua the Canaanitess. And Er, the firstborn of Judah, was evil in the sight of the LORD; and he slew him. 4And Tamar his daughter in law bore him Pharez and Zerah. All the sons of Judah were five. 5The sons of Pharez; Hezron, and Hamul. This comes from Genesis 46.
Carmi and Hezron below are sons of Reuben (see Genesis 46), but Zerah and Ethan are not there attested, so some error has crept in here. Heman, Calcol and Darda were sons of Mahol (see 1 Kings 4:31) and in that passage Ethan is also mentioned, but this is many centuries too late. Probably the scribe copied one line from the wrong column into place here. However Achar "who transgressed" lived under Joshua, so the entire flow here is disturbed by multiple issues. 6And the sons of Zerah; Zimri, and Ethan, and Heman, and Calcol, and Dara: five of them in all. 7And the sons of Carmi; Achar, the troubler of Israel, who transgressed in the thing accursed. 8And the sons of Ethan; Azariah.
The flow continues, now following Ruth 4: 9The sons also of Hezron, that were born unto him; Jerahmeel, and Ram, and Chelubai. 10And Ram begat Amminadab; and Amminadab begat Nahshon, prince of the children of Judah; 11And Nahshon begat Salma, and Salma begat Boaz, 12And Boaz begat Obed, and Obed begat Jesse,
13And Jesse begat his firstborn Eliab, and Abinadab the second, and Shimma the third, 14Nethaneel the fourth, Raddai the fifth, 15Ozem the sixth, David the seventh: 16Whose sisters were Zeruiah, and Abigail. And the sons of Zeruiah; Abishai, and Joab, and Asahel, three. 17And Abigail bare Amasa: and the father of Amasa was Jether the Ishmeelite.
18And Caleb the son of Hezron begat children of Azubah his wife, and of Jerioth: her sons are these; Jesher, and Shobab, and Ardon. 19And when Azubah was dead, Caleb took unto him Ephrath, which bare him Hur. 20And Hur begat Uri, and Uri begat Bezaleel.
21And afterward Hezron went in to the daughter of Machir the father of Gilead, whom he married when he was threescore years old; and she bare him Segub. 22And Segub begat Jair, who had three and twenty cities in the land of Gilead. 23And he took Geshur, and Aram, with the towns of Jair, from them, with Kenath, and the towns thereof, even threescore cities. All these belonged to the sons of Machir the father of Gilead. 24And after that Hezron was dead in Calebephratah, then Abiah Hezron's wife bare him Ashur the father of Tekoa.
25And the sons of Jerahmeel the firstborn of Hezron were, Ram the firstborn, and Bunah, and Oren, and Ozem, and Ahijah. 26Jerahmeel had also another wife, whose name was Atarah; she was the mother of Onam.
27And the sons of Ram the firstborn of Jerahmeel were, Maaz, and Jamin, and Eker.
28And the sons of Onam were, Shammai, and Jada. And the sons of Shammai; Nadab and Abishur.
29And the name of the wife of Abishur was Abihail, and she bare him Ahban, and Molid.
30And the sons of Nadab; Seled, and Appaim: but Seled died without children.
31And the sons of Appaim; Ishi. And the sons of Ishi; Sheshan. And the children of Sheshan; Ahlai.
32And the sons of Jada the brother of Shammai; Jether, and Jonathan: and Jether died without children.
33And the sons of Jonathan; Peleth, and Zaza. These were the sons of Jerahmeel.
34Now Sheshan had no sons, but daughters. And Sheshan had a servant, an Egyptian, whose name was Jarha.
35And Sheshan gave his daughter to Jarha his servant to wife; and she bare him Attai.
36And Attai begat Nathan, and Nathan begat Zabad,
37And Zabad begat Ephlal, and Ephlal begat Obed,
38And Obed begat Jehu, and Jehu begat Azariah,
39And Azariah begat Helez, and Helez begat Eleasah,
40And Eleasah begat Sisamai, and Sisamai begat Shallum,
41And Shallum begat Jekamiah, and Jekamiah begat Elishama.
42Now the sons of Caleb the brother of Jerahmeel were, Mesha his firstborn, which was the father of Ziph; and the sons of Mareshah the father of Hebron.
43And the sons of Hebron; Korah, and Tappuah, and Rekem, and Shema.
44And Shema begat Raham, the father of Jorkoam: and Rekem begat Shammai.
45And the son of Shammai was Maon: and Maon was the father of Bethzur.
46And Ephah, Caleb's concubine, bare Haran, and Moza, and Gazez: and Haran begat Gazez.
47And the sons of Jahdai; Regem, and Jotham, and Gesham, and Pelet, and Ephah, and Shaaph.
48Maachah, Caleb's concubine, bare Sheber, and Tirhanah.
49She bare also Shaaph the father of Madmannah, Sheva the father of Machbenah, and the father of Gibea: and the daughter of Caleb was Achsa.
50These were the sons of Caleb the son of Hur, the firstborn of Ephratah; Shobal the father of Kirjathjearim.
51Salma the father of Bethlehem, Hareph the father of Bethgader.
52And Shobal the father of Kirjathjearim had sons; Haroeh, and half of the Manahethites.
53And the families of Kirjathjearim; the Ithrites, and the Puhites, and the Shumathites, and the Mishraites; of them came the Zareathites, and the Eshtaulites,
54The sons of Salma; Bethlehem, and the Netophathites, Ataroth, the house of Joab, and half of the Manahethites, the Zorites.
55And the families of the scribes which dwelt at Jabez; the Tirathites, the Shimeathites, and Suchathites. These are the Kenites that came of Hemath, the father of the house of Rechab.