Hi Birgitta, In 1910 Lars J. Hammer and family were living in San Francisco Assembly District 34, San Fran Co., CA. Lars J. Hammer, 37. Ogot E., wife, 30. Gladys, 6. Hermie S., 2 Alexander F. Gordon, 30. Mabel J. Gordon, 30. Juliet Lukey, 53.
I can't provide you more details because I can't read the Census page.
In 1920 the family is living in O'Neal, San Joaquin Co., CA. L. John Hammer, b. Sweden, 49 or 54 yrs old, immigrated 1893, Naturalized 1901, general farmer. E. Ogot, wife, b. Norway, 41, Imm 1881, naturalized. Gladys, dau, b. Canada, 16, imm 1907. A Bernice, dau, b. CA, 12.
I'd look for the girls' marriage records in San Joaquin Co. (they aren't living with their parents in 1930).The San Joaquin Genealogical Society, rootsweb.ancestry.com/~sjgs/index.htm does research for a fee.
OR you can contact the San Joaquin County Recorder/County Clerk's Office, sjgov.org/recorder/dynamic.aspx?id=10793.
In 1930 Lars and Ogol are living in O'Neal. Lars J. Hammer, b. Sweden, 59, marr @ 31, imm 1893, general farmer. Ogol E., wife, b. Norway, 50, marr @ 22, imm 1881. Conrad Nuxoll, lodger.
I didn't find Lars' death information. The San Joaquin Genealogy Society or County Recorder might be able to help you with this.
An Ogot E. Hammer Born: 17 Aug 1880, Norway Died: 28 Nov 1972, Sonoma Co., CA. Source: California Death Index 1940-97.
There is an obituary volunteer at Random Acts Genealogical Kindness. Go to raogk.org Choose California Click on S Scroll down to Sonoma Co.
I did find the following record A Bernice P. Hammer Born: abt. 1910 married a Robert G. Forsyth Age: 76 on 6 June 1980, Los Angeles Co. CA Source: California Marriage Index 1960-85.
You can pursue the details at the Los Angeles County Clerk/Recorder, lavote.net/recorder/BDM_Records.cfm . Successful Searching!