Find a Grave, database and images (www.findagrave.com/memorial/22158752/joab-willis : accessed 02 July 2021), memorial page for Joab Willis (29 Sep 1715–4 Jan 1805), Find a Grave Memorial ID 22158752, citing First Cemetery, Bridgewater, Plymouth County, Massachusetts, USA; Maintained by Chip5610 (contributor 46997557).