My 6th great grandmother was Mercy Welch Spaulding, daughter of James Welch, of Swansea. I just untangled 4-5 different Welch/Welsh families with the help of fellow curator, Erica Howton. The experience pointed out to me how important knowledge of geography is but it especially indicated to me that I did not understand the geography of Massachusetts and Connecticut.
The Welch family I'm descended from lived in Bristol, then the county seat, now in Bristol County, Rhode Island, and in Swansea, and Rehoboth, currently in Bristol County, Massachusetts. All three of these towns were in close proximity. I had them confused with a Malden, MA family, which now makes little sense.
In fact, my Williams ancestors stayed in the area from Richard Williams, Immigrant, my 8th great grandfather, married to Frances Deighton / Dighton (for whom Dighton, Bristol, MA is named) through my 3rd great grandfather, as follows.
8th ggf Richard Williams, settled in and died in Taunton, Bristol, MA
7th ggf Nathaniel Williams, born and died in Taunton, Bristol, MA
6th ggf Nathaniel Williams born and died in Taunton, Bristol, MA
5th ggf Nathaniel Williams born in Taunton, Bristol, MA and died in Raynham, Bristol, MA
4th ggf Seth Williams born in Raynham, Bristol, MA and died in Pomfret, Windham, CT
3rd ggf Zephaniah Williams (my mother was called little Zeph because she reminded relatives of him) born in Raynham, Bristol, MA and died in Pomfret, Winham, CT
2nd ggf Giles Williams born in Pomfret, Winham, CT and died in Ledyard, Groton, CT
ggf Arthur Wellsley Williams born in Worcester, Massachusetts, died in Hartford, CT, and buried in Milford, CT home of his wife's Stowe ancestors
grandfather Arthur Williams II born in Mount Vernon, Westchester, NY and died in Rochester, Monroe, NY
mother Ann Browning Wiliams (my mother) born in West Englewood, Bergen, New Jersey and died in Marin County, CA
Mercy Welch is the daughter of Mercy Sabin. Most of the Williams were buried in Sabin Cemetery in Pomfret. I have no idea if there is a connection between Mercy Sabin of Rehoboth, Bristol, MA and the cemetery in Pomfret, CT.
Mercy Welch had a daughter Abigail Spaulding Warren whose daughter Abigail Warren Howe had a daughter Olive Howe Williams, wife of Zephaniah Williams above.