I believe they are two different people.I am a decendent of James Bunker and Sarah Pepperell.I found the folliwng:
3. James Bunker. Son of James Buncker. Born 1627 in Slapton, Devonshire, England. Christened 10 Feb 1633 in Slapton, Devonshire, England. Died Jun 1698 in Oyster River (now Dover, NH). He first married Sarah Nute, daughter of James Nute & Sarah, in 1663 in Oyster River (now Dover, NH). Born 1646 in Oyster River (now Dover, NH). Died after 14 Oct 1697. Children: i. John (I) Bunker
James Bunker second married Sarah Pepperell in 1661 in Dover, NH. Born 1632 in Dover/Durham, NH. Children: 4 5 i. ii. iii. iv. v. James Bunker Mary Bunker; Born 1664 in Dover, NH. Died 1738. Joseph Bunker; Born 1666 in Dover, NH. Died 1704. John (II) Bunker; Born 1667 in Dover, NH. Sarah Bunker; Born 1669 in Dover, NH.