I'm not related. I would say you have quite a task on your hand.
The 1880 shows the widow Amanda Mc Bride with Thomas and Sarah living in Chester, Delaware County.
The 1870 census shows Amanda McBride with son Eugene 20 and daughter Sallie 17 again in Chester.
The 1860 census shows an Amanda M Bird 28, Eugene 10 and Sarah C. 6 living with John E. Brown 68 in Chichester Twp., Delaware County.
The 1850 census shows an Amanda Ebright 17 and Eugene 6/12 living in Chester.
Eugene is in the 1880, 1900, 1910 and 1920 censuses of Chester. His death certificate might be helpful.
John may or may not have been Sarah's father's first name. Often when the informant didn't know the correct first name for the father John was used whether it actually was the father's first name or not.
Check with the Delaware County Historical Society and the Delaware County Arhives to see if they can help you. For Philadelphia check with the Historical Society of Pennsylvania.