I was recently at the lower burial ground in the Germantown section of Philadelphia, also known as Hood's Cemetery. I found my ancestors as well as people I believe to be her relatives. Any connections to these Philadelphia Stewarts?

My ancestor is Mary Jane Stewart, born 01/20/1800 in Ireland.
She married Daniel VanOsten, and she died 11/6/1871 in Phila.

Also buried in a nearby plot are...
Thomas Stewart, born 03/04/1807, died 04/16/1882.
He married Mary A. Stewart, born 12/18/1816, died 07/12/1880.
Also nearby...
Ann Stewart, born 7/1809, died age 52.

Any of this sound familiar? If so, please reply... Thanks.