Hi there, clutching at straws I know, but I had relatives in the States who connect both to Dynes and McMurrays. Brothers (1)Thomas McGaffin and (2)James McGaffin, originally from Bleary County Down, share a relative with me, namely my GreatGreatGrandfather. Thomas boarded with what we assume was his friend Pierce Dynes in Amsterdam New York in 1910, James ended up in Saxonville, Framingham, Massachusetts, and married a Martha Crager (nee McMurray). Martha had a sister Mary, married to George Sturgeon. They are all originally from the Lurgan / Portadown / Gilford and surrounding areas. Does this ring a bell for you?