I watched wagon train as a child in England and my father William carter McGrath born 1916 always joked that that frank McGrath was a distant relative. Do you know what the C stands for in Robert C McGrath? Also, I have a Caroline carter McGrath in the 1851 UK CENSUS age 30, a widow with a 4 year old son Thomas carter McGrath both born in Waterford Ireland. Though I can find no other mention of Caroline - Thomas goes on to marry Mary and have my grandfather Edward carter McGrath in 1885. According to Thomas and Mary's wedding certificate Thomas' fathers name was John/deceased.