Oh, I get it. OK. Fred was his brother, who played the Scarecrow in the early stage production of the Wizard of Oz.
Wow, never heard of him. Did some searching and found he was
Milburn's uncle (you were close) and he was born in Longmont, CO (about 35 miles from me) in 1873 in a log cabin. Ran away at age 11. (that probably reduced the population of Longmont by a third at that time)