Her PA Death Certificate says she was the daughter of John and Luise (Saylor) Fritz and she was born in Schuylkill Haven. From find-a-grave, we also learn that she remarried Edwin Suppler after John died.

There is a John B Martz buried in Philadelphia, born, it says on find-a-grave, in 1842. David and Christina Mertz of Schuylkill County had a son John, a minor when Christina died in 1847. In the Civil War unit in which Daniel Martz (believed to be David’s son) served, we find a John B Martz born 1842 in the same unit.

Then there’s this. I found a history of Schuylkill County which consisted of several different thematic articles written by older citizens of the county and one of the articles was the story of the different ways county citizens supported and participated in the Civil War.

One of those told the story of Company I, 39th regiment. And he specifically mentioned Johnnie Martz (who must have been quite a character) who served in that unit and later moved to Philadelphia and died at a young age.

Rarely in genealogy do you find as consistent a set of facts allowing us to say Christina’s son John was Johnnie in Company I and is buried in Philadelphia. John B is designated N3b3.