Neither Dormansville or Pound Ridge are anywhere near Delaware County.
If you enter each place name in the "search" function of your computer, you
should get a nice description of each community. Dormansville zip code 12055]
is a very tiny community in Albany County-quite near Westerlo; Pound Ridge is
an upscale type community [very old] near Connecticut-population about 4000 in
Hope this is of help as you search your family history.