I was doing some research today and came across this posting of 8 1/2 years ago. ...UPDATE: I found Roudolph Darensbourg in 2004. There wasn't a lot but all the clues bore out as correct. I have since shared the information with his living sister. Quite a thrill for the family. The sister is the only remaining child of Frederick Charles and Sarah DeLisle Darensbourg...She lives her in Los Angeles and is 102 yrs. I saw her August 2008. She is absolutely beautiful.