You note that Selah Hall was named as an administrator of the estate of Stephen Collar who died in New Hartford, Litchfield County, Connecticut, in 1804. I believe Selah Hall was Sealand / Seland Hall, who was born in 1781 in Cheshire, New Haven County, Connecticut, and died in 1822 in Burlington, Hartford County, Connecticut.
Abigail Hall and John Colyer of Burlington were the administrators of Sealand Hall’s estate. Abigail Hall is recorded as age 66 and born in Connecticut in the 1850 census of Amity, Allegany County, New York. Was her maiden name Collier?