I also had a Great Grandfather named Joe Skwierawski. Currently I don't know if Martha was his wife. My Grandfather's name is also George. He had eight children: Susan, Mark, Dean, Greg, Rob, John, Jay and Jeff. Joseph owned properties in Milwaukee and Northern Wisconsin.
This might be off track if we're from a different line of Skwierawski's. I'll check with the elders and get back...