I am searching for William Kraus, md to ? O'Brien (Or O'Brian) died in 1967 CA. His mother's maiden name was Schanher. I know very little, but believe Wm. had 10-12 siblings, was born in MI in 1886 and dies in the Oakland, Piedmont, CA area. He married a woman with surname O'Brien and they only had one daughter who is now deceased. Please email any information you think might be helpful. Wm. worked for Standard Oil and fought in WWI, but I do not know what branch of military. Thank YOU!