Philip Dorheimer's father was also William Dorsheimer so perhaps there was another brother.I only know of a brother named Henry Dorsheimer, but that doesn't mean there weren't others - just not that I am familiar with.
Info on his parents: Father Wilhelm Dorsheimerabout 1766-1852 in Buffalo, NY (aged 86) (immigrated in 1834 to the US) ep Mother Maria Graemerd. in Germany age 62
Philip (my ancestor) was born: Born Apr 15 1797 in Dondersberg, Germany in the Canton of Wollstein
If you wish to discuss further, my e-mail is firstname.lastname@example.org