Parents of Theodore Roosevelt Harold

Theodore R. Harold was born November 3, 1900 and he died September 13, 1976 in Toledo Ohio. He shows up in a 1930 census where he is renting a room there. Strangely enough, another person renting a room in the same house is a "Helen Harold". The same last name can't be a coincidence, but I have been unable to find a relationship there. He married Mildred in the same year and by the 1940 census, has two children, Douglas and Phyllis. His life is pretty well documented after that, and his obituary lists a sister, Beatrice Cook, who was still alive when he died. No parents are listed in the obituary. The family story is that he left home at 15 and never looked back, not contacting or mentioning his parents. His son, Douglas, has no knowledge of ever meeting the grandparents, but remembers talk of Yakima, Washington. I would really like to find the parents and grandparents of Theodore. It is my theory that some family member was involved with Theodore Roosevelt's Rough Riders, or at the very least, admired him so much that he named a son after him! I have searched through Ancestry.com under different spellings of the name Harold, i.e. Herold, Harrold, etc. but have been unable to find the family. Any help would be appreciated!