I really do not know the names of all of Jacob and Dolly Cook Lycan's children.Jeremiah, Jacob, Sarah who married Aaron Pinson.
I have been told by others that this Jacob was married twice and his second wife, name unknown to me was the mother of Sarah who married Aaron Pinson. I have not been able to verify this.
There was one lady on this forum that said her brother had the will of the Jacob we are talking about. However, she did not give me her brother's name or where he could be located.Perhaps you will have better luck finding this will than I have had.
The Lycan's migrated to Indiana and Illinois with the Pinsons. You can pick up some names from the land records.
Sorry I cannot help you further.Actually, I should look at the Lycan land records.They may be selling off land that belonged to their father. That would be Vermillion Co., Indiana and Edgar Co., Illinois.
I have no idea where Jacob or Dolly Cook Lycan died. As far as Dolly goes, I believe her father was William Cook. He had a son named Cornelious (spelling??)Cook. I believe you can find them in Indiana also. I have never been able to prove this connection. However, Cornelius was a familiar name in the Pinson family.