William Searle - Who did he marry?

William Searle has been linked by Geni to William Searle

From Rowley VR, we know he was born May 12, 1754, to William, Jr. Searle and Abigail Searle There is also a marriage record to "Nella Straw, both of Byfield, Rowley, at Newbury, Dec. 31, 1777."

From Family Search, https://ancestors.familysearch.org/en/L2CQ-9SL/william-searle-1754-..., there are two wives - Anna Fifield and Nella Straw. All of the children are attributed to Anna.

https://ancestors.familysearch.org/en/LH67-WNF/nella-straw-1842 has Nella's marriage intentions and marriage and a Pension payment ledger.

From Find a Grave, there is a photo of the grave of a Deacon William Searle - https://images.findagrave.com/photos/2014/337/139586025_1417732657.jpg

Which woman did he marry? Or did he marry Nella during the Revolutionary War, divorce her and then marry Anna?

Any insight would be appreciated.