Update!!
Maurice and Mary (Fitzgerald) were still alive in 1/1920. According to the census..
Katherine age 39 was a nurse and working at a hospital. Never married. Belived to be a Nun.
Julia, age 37 was married(Scanlon) and living with her parents with her son Percy, age 17.
Also living with them was Maggie or Margarets son, Paul Ross, age 19.

I believe Maggie's husband was Albert L. Ross. Married on 7/5/1899 in California.

Julia is buried at Holy Sepulcher Cementery in Orange, CA. It only lists one son living, John P. Scanlon. Julia died 7/23/1959.
Also listed is 6 others Scanlon names...not sure if they are related.

Maurice and Minnie Elizabeth(Williams) are buried at Inglewood Park Cemetery, in Inglewood, Ca. They do not have any other family members there.