Awww...Peanuts

[STS Lincolnite]

A while back, I was paging through Michael Kauffman's In the Footsteps of an Assassin. On page 57, in a picture caption, Mr. Kauffman describes Joseph "Peanuts" Borrows as "the young son of a local doctor". The idea that he was the son of a doctor was a new one to me. I went back to American Brutus, and throughout the book, Mr. Kauffman spells Peanuts' last name as "Borrows" as compared to the more commonly seen "Borroughs". I was not, however, able to find any reference or note in regards to a source regarding young Mr. Borrows (Borroughs?).

Does anyone know where the statement claiming Peanuts was the son of a doctor may be sourced from?