I think this might be your line. Most of this information was found on the free LDS website at www.familysearch.org
Marriage: City of Newton, Mass.January 3, 1903
Herbert Urquhart, 26, first marriage, residence in Newton, coachman, born Hants Co., Nova Scotia, Canada, son of Daniel Urquhart and Catherine Pratt, married to Nellie May Ward, 24, first marriage, residence in Newton, dressmaker, born Kings Co., Nova Scotia, Canada, daughter of Edward Ward and Catherine A Walker.
1910 San Francisco, California census
Home of James Dexter, age 76
Herbert Urquhart, lodger, age 33, married once for 7 years, born Canada, father born Canada, mother born Canada, railroad motorman
Nellie Urquhart, lodger, age 30, no children, CAN, CAN, CAN
Birth: Male Urquhart child born August 9, 1914 in Melrose, Middlesex, MA to Herbert Urquhart and Nellie M. Ward.
1920 Melrose City Ward 1, Middlesex, Massachusetts census
Herbert Urquhart, head, 43, CAN, CAN, CAN, express car baggage checkout
Helen M Urquhart, wife, 36, CAN, CAN, CAN
Herbert H. Urquhart, son, 7, California, CAN, CAN
Arlene L Urquhart, dau, 11 months, Massachusetts, CAN, CAN
1930 Melrose, Middlesex, MA census
Herbert Urquhart, head, 48, Nova Scotia, N.S., N.S., express shipper
Nellie M Urquhart, wife, 49, N.S., N.S., N.S.
Arlene L Urquhart, dau, MA, N.S., N.S.
Marriage: Arlene Lorraine Usher married Omer Marvin Blackshire on January 16, 1943 in Monroe Co., Florida.
1945 Tampa Bay, Hillsborough Co., Florida census
Omer Blackshire, head, age 24, born West Virginia, navy
Arlene Blackshire, wife, 26, MA, house wife
Wanda Blackshire, dau, 0, FL
Divorces for Omer M. Blackshire: fromLorraine A Blackshire in June 1957 in Pinellas Co., FL; from Margaret S. Blackshire in August 1961 in Pinellas Co., FL; and from Charlotte Blackshire in February 1981 in Citrus Co., FL.
The Social Security Death Index includes Omer M. Blackshire August 15, 1920 to May 9, 1991. His social security card was issued in West Virginia.