Isaac Barker, Sr.

https://ma-vitalrecords.org/MA/Essex/Andover/aBirthsB.shtml "(Barker) Isaac, s. Abiel and Sarah, Aug. 24, 1769."

https://ancestors.familysearch.org/en/LBSS-VRM/isaac-barker-1769 has his marriage to Zerviah Pearson.

https://mhl.org/sites/default/files/files/Abbott/Barker%20Family.pdf (page 34) has his children with Zerviah Pierson.

He is not the Isaac Barker who died in Andover "Sept. 20, 1833, a. 77 y." That would be Isaac Barker, of Andover.

Dracut VR has Isaac and his second wife, Abiah (unknown) with these children:

• Abiol, s. Isaac and Abiah, May 7, 1797.
• Samuel, s. Isaac and Abiah, July 15, 1799.
• Maria, d. Isaac and Abiah, Feb. 16, 1801.
• Bradley, s. Isaac and Abiah, June 3, 1803.
• Stephen, s. Isaac and Abiah, May 3, 1805.