Hi,
My grandpa, George Kepich, had a cousin Johnny who lived near him in Michigan. His wife is Rose Kepich. If I remember correctly, Johnny's dad was Peter. Not sure if it is the same Peter or not. My dad said he was called Streiko Pete. I don't know what this means though.
Have you been able to find the wives and the children in 1910? I know that Helen/Illona Kepich, my ggm was here by 1906 and my grandpa was born in PA in 1908 but no idea where they are in the 1910 census.