From the Thomas Rogers Society page on Abigail (no maiden name):

http://www.thomasrogerssociety.com/p76.htm#i2261

Abigail1 F, b. 1710, d. 27 July 1771

Abigail was born in 1710.

Her married name was Williams.

She married Ephraim Leonard, son of George Leonard and Anna Tisdale, on 18 March 1760 at Easton. Her married name was Leonard.

Abigail died on 27 July 1771.

Citations

[S1] Ann T. [Revised by], (Originally compiled by Alice W. A. Westgate) Reeves, Mayflower Families Through Five Generations: Descendants of the Pilgrims who landed at Plymouth, Mass. December 1620: Family of Thomas Rogers (Plymouth, MA: General Society of Mayflower Descendants, 2000), p. 179. Hereinafter cited as Rogers-Silver.