If your family was Catholic, you might want to check Holy Cross Cemetery in Yeadon, Delaware County. Quite a few South Philly folks are buried there. My Irish Catholic ancestor who lived at Front & Vine Sts (center city Philly) was buried there in the 1890's. They have quite a few graves from the late 1800's.
I know that Catholic death records were kept by the local churches. You can figure out which churches were in the neighborhood at that time, and write them for the records. Death records will probable include burial info.