Thomas Holcombe - Burial Place or Memorial?

Wikitree, once it settles down from ranting paragraphs, finally adds useful matter for consideration:
"The FamilySearch card showing Abigail Holcombe born in Granby[8] is derived from a large tombstone erected in Granby by descendants of Thomas Holcombe. The many errors on it have been propagated over time and multiplied over the Internet. See Genealogical Vandalism - Thomas Holcombe's Tombstone, by George McCracken, in The American Genealogist Vol. 44, p. 58, January 1968, for details. McCracken, F.A.S.G., F.G.S.P., also documents Holcombe descendants in TAG Vol. 57." https://www.wikitree.com/wiki/Holcomb-847

https://connecticuthistory.org/towns-page/granby/ states: "Granby...was settled in 1660 and incorporated in 1786 from a section of Simsbury."
The author cites sources that conflict with the 1660 timing. Two books play it safe and refer to Granby when it became "incorporated. The third book takes a completely different approach:—
1. – Salmon Brook Historical Society, and Mark Williams. A Tempest in a Small Town: The Myth and Reality of Country Life: Granby, Connecticut, 1680-1940. Granby, CT: Salmon Brook Historical Society, 1996.
2. – Granby Bicentennial Committee. Granby, Connecticut: A Brief History, 1786-1986. Granby, CT: Granby Bicentennial Committee, 1986.
3. – Phelps, Noah A. History of Simsbury, Granby and Canton from 1642 to 1845. Hartford, CT: Case, Tiffany and Burnham, 1845. – NOTE: A chapter title reads: "Granby. – Settlement. Civil and Ecclesiastical History. 1681–1845". https://archive.org/details/historyofsimsbur00phel/page/n3/mode/2up...
4. – Salmon Brook Historical Society. The Heritage of Granby, 1786-1965: Its Founding and History. Granby, CT: Salmon Brook Historical Society, 1967.