Palmer, Horace Wilbur,. Palmer families in America. Neshanic, N.J.: Neshanic Print. Co., 1966 references the Quaker MM records for Nine Partners (Great Nine Partners) in Duchess County, NY in relation to this William Palmer. The Nine Partners Quaker records at Ancestry appear incomplete and those archived at https://archive.org/details/quakerrecordsnin00soci/page/n6 also appear incomplete or lack records prior to about 1745. Thus this William Palmer and his wife Rachel Fowler (who is the current subject of my research) appear nowhere in these Quaker sources. Does anyone know where the earlier Nine Partners records may be found? Horace Palmer cites them but nowhere indicates were he found them.
The sources page on WikiTree for Nine Partners appears to contain records dated after those that would include William and Rachel. I don't see that they appear in those on the resource page.
From what I can gather, Oblong and Nine Partners Meeting was not granted until 1744 by Purchase QM.
Just to update this thread for anyone else looking for Nine Partners Meeting Minutes, Michael Cayley has found that many of them are with the Canadian Friends Historical Association at this link. Records held in Canada appear to start about 1779 (so not entirely relevant to the original question of this thread).
After working with the Oblong and Nine Partners monthly meeting records, I found that a large number of Quakers in Dutchess County came from the Dartmouth monthly meeting. Those records are digitized, but mostly unindexed.
https://www.dartmouthhas.org/apponaganasett-friends.html
https://dartmouth.theweektoday.com/article/quaker-families-left-dartmouth-new-york-centuries-ago-records-show/45645