It's hard to read the 1910 census.Robert Gray was under the name as Robert Grey in the 1910 census.
He was living with George Willie (hard to see if it really is Willie for last name).
George Willie was head of family, 70 years old, married 2nd time for 18 years, and from England. Your Robert Gray/Grey wascousin-in-law to George Willie...according to the census. George Willie was engineer at a tannery.
Robert Grey was 23, single, carpenter, from England.
George Willie's wife was Mary A. ...50 years old, married 2nd time for 18 years, and from England.
George and Mary's children were Evelyn B. 22 years old, born California..a stenogrpher by occupation..single; Hallie L. , 16 years old...single, and George B. 13 years old...single.
The family right below them in the census also was from England...Crawley, James, 56 years old and Margaret Crawley, 35 years old.James was foreman at a tannery.