I found out a bit more - I think his wife was Olga Santiago b at Guatemala (maybe around 1965). She uses the surname Bucknum so she was probably married to Steve. She is listed as Olga Santiago Bucknum or Olga S Bucknam at several addresses in Oakland CA, Emeryville, Walnut Creek, Hayward, and Alameda, some of which are probably fairly recent. Indications are that she is not currently living with Steve. I still don't know whether he is alive or dead.