Her brother Peter D. Flansburg was born in1847 who married a Northrup was my ggrandfather. He moved to MN and died here. Peter Flansburg who was born about 1806 was my gggrandfather . His father was William F. Flansburgh. I have tried to find their graves in surrounding cemetery listings, but I haven't had luck. I did find a picture of Sylvester's wife Mary's grave in Whitehouse. However the place with the picture said it is inside a park and the graves were not kept up outside of Wells, NY.