Of his three older brothers, one died in Colorado, and the other two moved to northern Indiana and became locomotive engineers.
Great-uncle Perry Lucian WILSON (1878–1937) worked for the Elgin, Joliet and Eastern Railroad Company (EJE) out of Gary. He was possibly married twice and appears to have had no children, at least none that I have found so far.
Great-uncle Ernest Dalton WILSON (1883-1952) also worked as a locomotive engineer out of Gary, was married, and had a son and a daughter. I have found a photograph of him standing in front of an EJE engine.*
It makes me wonder if one brother followed the other up north, or if they went together.
*This photo can be found in a public tree on Ancestry. I am not republishing it here.