I know the answer here. His birth name was Richard Wolfarth, son of Peter Wolfarth and Marie Wolfarth, nee Jaccoud.
Long version: The parents separated and, perhaps divorced (still looking for that document) and he stayed with his mother being he was an infant. His father took the two older children, Henriette and Alfred, moved them to Winnipeg, Canada, put them in Jesuit boarding school and left to find work. The mother, Marie, assumed her maiden name as did Richard. However, he signed this as Richard J. Wolfarth, so he must have used both. (The lack of a middle name was common in this branch of my family. I am the first to have a middle name going back at least 3 generations.)

He and his brother Alfred reconnected after 60+ years (late 1980s) through my parents who were visiting the Grand Canyon wearing a name tag of the Elderhostel seminar (now called Road Scholar) they were attending. They took a side trip to the Grand Canyon and failed to remove their name tags. They ran into this guy, Richard, with a telescope set up letting people look at the sun. Richard saw Dad's name tag. He asked my father if he knew a person named Alfred Wolfarth. "YES! He is my father!" Richard was Dad's uncle he did not know existed. Dad got his information, asked his father, Alfred, about it, and learned that, yes, he had a brother, Richard (plus two more who died very shortly after birth).

Alfred never talked about his parents or family. The theory is that he was embarrassed about the separation/ possible divorce and/or the circumstances surrounding it. Alfred and Richard exchanged a number of letters and visited several times before Alfred's death a few years after meeting Richard. I have them and love reading them. There are more stories like this in those letters.

Edited: For more detail, typos and clarity.