If your grandfather was George M. Hevlin, then we are definitely related. My grandfather, George. M. Hevlin sired my father (at age 67 in 1935), Robert L. Hevlin Sr, as well as my aunt Lillian and Uncle George (he was K.I.A. in WWII) and other siblings; and, I am Robert L. Hevlin jr. I do not have a subscription to ancestry, but I have an e-mail account: BigBob1963@hotmail.com
and can be reached there. I have numerous 1940's photo's Lillian provided ere she passed.