I knew they had a brother named Giacomo. He was in the obituaries of all the boys as "surviving brother". Never in the census records. I finally did a search on all Marianis in San Francisco and found not too many. Some were not related at all. Some were, but how?
I made index cards of all and the only one that didn't make sense was Giacomo.
So I did a google search on the word. It means, "James". The James in the census files is Giacomo. One in the same. Why did I not think of this? Now I have to start over with all the James info I found and add it to Giacomo's file.
All because a rose isn't necesarily a rose; it could be a rosa.