There is a nice picture of the two little boys in our family archives. They seem to differ very little in age. On the back, it says in Rudolf's widow Mitzie Müllner von Marnau's handwriting: papa und Onkel Alfred.
Another picture, presumably taken in 1915, shows Pauline Reischl with an adult man. On the back, it says "granny Praxmarer and uncle Alfred". 
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Alfred is 29 degrees from Ingrid Bergman, 39 degrees from Bernardo Bertolucci, 35 degrees from Diahann Carroll, 25 degrees from Claudette Colbert, 35 degrees from Ronnie Colman, 27 degrees from Kirk Douglas, 27 degrees from Rutger Hauer, 31 degrees from Cloris Leachman, 25 degrees from Marcello Mastroianni and 30 degrees from Mark Weinheimer on our single family tree. Login to find your connection.