Hello Everyone, I seem to have hit a road block on my 3rd Great Grandfather Michael McGivern. 1 Nov 1810 - 18 Feb 1892. He was born in Down Ireland, I have no information prior to that. Married Catherine Ford 1842 in New York. Lived & died in Waukesha WI. I am able to go back 20+ generations on other family lines, yet I am stuck on my largest heritage. Can anyone offer assistance?