Here is some info which may be helpful:
George Schermerhorn (Henry's father)was a member of the Milford Center Baptist Church, being #133 on the list of members and his wife being #132. According to records of the Milford Center Baptist Church, George and wife Elizabeth, Nicholas and wife Elizabeth, Henry G. and his wife Elizabeth and others left the Church in 1833 to form a second Milford Baptist Church, this one at Edson's Corners. Henry G. Schermerhorn and his wife came back to Milford Center Baptist Church in 1856 but George and his wife never rejoined.
In 1837, another group of pilgrims were sent out for the purpose of forming a society in Oneonta, New York and thus we have the beginnings of the First Baptist Church of Oneonta. Amoung those sent out was Margaret C. Folmsbee, daughter of George Schermerhorn.