Westbrookville Cemetery is in Westbrookville, New York.
http://www.findagrave.com/cgi-bin/fg.cgi?page=cr&GSln=Ashworth+&GScid=212409&GRid=18653177&CRid=212409& says it is in Sullivan County. At least one census seems to have said that the whole hamlet was in that county.
However, Wikipedia says Westbrookville is over the south-east border in Orange County.
We need a map or two.