Your late son's father, Leo Ehmer (didn't know his first name was George, but that was his dad's name, so it stands to reason), was a neighbor of mine in Rochester, Washington, in the late '50's and early 60's. He was a good guy, and I often wondered what happened to him. From Google, he apparently was in the Marine Corp from '66 (when he would have graduated from high school) to '70, and now is in eastern Oregon (Irrigon or Pendleton area). He did indeed have many siblings- (from eldest down) Betty, Sherry, Leo, Hank, Cindy, (a girl whose name I don't recall), and Andy. His folks used to work for my dad on our dairy farm from time to time- his dad was a good-hearted guy who probably didn't have an easy time providing for the large family. His mom could be a bit of a pill, especially with those of her children who were not her "favorites" (Leo was one of her non-favorites).
Might try to look Leo up when I'm in eastern Oregon.