May (Tibbetts) Jarvis' (1937) work on the descendants of Henry Tibbetts of Dover, New Hampshire lists Martha, daughter of Rev. Nathaniel and Elizabeth (Alley) Tibbetts, b. 24 Sep. 1777 (probably in Boothbay). The family relocated to New Sharon, near where Aaron Day resided in Starks. Current research has been posted at genejourneys.com which demonstrates that Martha "wife of Aaron Day, died Feb. 16, 1844, AE 66" (buried in Medford) was the daughter of Rev. Nathaniel and Elizabeth (Alley) Tibbetts. You may view the post directly here: http://genejourneys.com/2015/02/15/awesome-autosomal-dna-solves-the...; Would enjoy collaborating with others also researching the Day and Tibbetts lines.