Birth17 October 1844
Memo(find-a-grave)
Death21 December 1918
Memo(find-a-grave, Ohio Deaths @ Ancestry.com says 24 Dec 1908)
BurialEvergreen Cemetery, Champaign Co, OH
Spouses
Birth26 February 1851
Memo(find-a-grave)
Death19 April 1918
Memo(find-a-grave)
BurialEvergreen Cemetery, Champaign Co, OH
Parent-Proof notes for Mary (Spouse 1)
Mary Frances (Beaver) Martz is the only other Martz buried in Evergreen Cemetery, where Jacob is buried. She is not linked to Jacob but she is linked to Rosamond (Mahan) (Beaver) Heaton whose husband Henry Beaver died in 1854.
In 1860, Jacob lived with Rosamond and her Beaver children, one of whom was Mary of the right age.
I think it all fits like a glove.