I have Samuel White born in Mendon 17 May 1719, no death date.The birth and death dates you have must be for Samuel's son, Samuel.(if not, then Samuel was less than a year old when your Adams was born)
I am a direct decendent of Adams brother Antipas who moved to Pomfret, CT,Antipas was also a Rev War Vet.
I show Abigale as the daughter of Josiah Adams born 08 Feb 1695/96 in Braintree Ma died Mar 1748/49 and Bethiah Thompson born 20 Mar 1692/93 in Braintree and died 20 Mar 1692/93 also Braintree.I show a marriage date of 25 Nov 1718.I have some earlier info on Josiah's roots but it is suspect.
I also have some Thompson/Parmetter info that you might be interested in.