I am 74 years old and living in wash. state. I remember my father telling me that his cousin, thomas walter lewsadder, had left covington indiana in the early 1900's and moved to loma linda, calif. I understand he was a 7th day adventist. I ran into his grandson, walter lewsadder in reseda, calif. in 1948 when our checking accounts got mixed up at the same bank.When my father,samuel edward lewsader, came to visit that year we went to visit him and verified the relationship. I never spoke to him after that. I understand that your grand father , when he came to calif. they got his named mixed up on his drivers license and he just took the changed name. Thats where the spelling got changed, but i understand it was originally lewsader.So i think your great grandfather and mine were brothers.