Pennines totally agree. The marriage is elusive unless per chance Mary married again after John Foley died(if he died first that is). The only marriage I could locate was for John with Bridget Quinn. On another note, in 1911 census there is a Mary Foley in Hamilton, Lanark with her 3 sons John, Charles & Thomas (who is correct age),her mother a Mrs McGhie lives with them. She is a widow and herself and mom born Ireland, sons Glasgow. In 1911 there is a John Foley living with sons John & Thomas in Gorbals, Lanark. 2 possibilities. Would need more to confirm or deny if either could be person of interest.