Edwin Greswold and Isabella Patterson Germantown, PA

I am looking for information on Edwin Greswold b. 1835. He married Isabella Patterson b. March 1841 in Ireland. They married and lived in Germantown, PA (that I know is a fact because I have Isabella's bible which she wrote in. I know that Edwin had a brother John Greswold b. 1837.
What I am looking for is Edwin and John's parents, there father was born in NY, but that is all the information I have. I am a descendant of Edwin Greswold-is there any descendants of John Greswold that have more info on the Greswolds?

Thanks!
Melissa Steever

PS I also have pictures and other info of Edwin, Isabella, and children, if any descendants are interested in copies. (i.e. One of Edwin's sons John b.1870 served in the Civil War, and I have letters John wrote to his wife Margret Cassin while he was away.) I am a decendant of Edwin's daughter Josephine.