On 25 Jan 1775 when David was 24, he married 
Lydia Viles (54191) , daughter of 
John Viles (ca 1707-4 Feb 1774) & 
Susanna Bemis (37938) (13 Jan 1714/5-28 Nov 1785), in Waltham, MA.
596,616 Born on 18 May 1755 in Waltham, MA.616 Lydia died in Spencer, MA, on 5 Nov 1812; she was 57.596 Buried in Old Cemetery, Spencer.
1810 Federal Census.  Spencer, Worcester County, Massachusetts
Roll 22, page 926
Family of Lydia Willson
    1 female 16-25
    1 female 45 and over [Lydia, 55]
Lydia died age 57 according to her gravestone.596