I'll answer your other questions here as well

1910 Salt Lake City UT
MOORE
Donald A [Arthur] 20 WA OH ID; m 1x; clerk, electric Co
Irene M [Marguerite] 25 Canada; m 2x
Richard C 1 CA WA Can
[they say they have been m 3yrs, but not so]

Donald m MRS Marguerite I [Irene] JENNINGS 3-10-1910, so don't know if Richard belongs to both, or is her son. With all the aliases he has, it might be difficult to track him down
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Sometimes one has to outfox the computer LOL
1920 Mineral, Plumas Co CA
MAURER
Clarence 29 CA CA CA; farmer
Winona 27 WA OH CA***********
Donald 5
Doris 3 1/12
Douglas 1/12
COCHRAN
Frank 31 CA TN CA; laborer; b/inlaw
Marion 26 WA OH CA*********
Stanley 1/12
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Wesley b c 1922

by 1940 San Fransisco Marian had m Russell OWEN
Marion OWEN b 12-20-1893 WA; d 12-9-1969 Butte CA; mother: HUGHES

by 1928/9 Winona had m Robt E BURNEY [1930 Washoe NV census]; had son b NV; by 1940 family in Oakland, Alameda CA
Winona Gertrude BURNEY b 4-20-1892 WA; d 5-25-1978 Alameda CA

Looks like Raymond MOORE remained the Bay Area
They might be on findagrave....haven't checked.