In the source referenced below, William Frederick Zimmerman is listed as "Fredrick Zimmerman" and also as "William Frederick Zimmerman". I've documented the latter as correct.
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William is 22 degrees from Prince Philip, Duke of Edinburgh Mountbatten, 25 degrees from Grace de Monaco, 24 degrees from Henrik af Danmark, 36 degrees from Sālote Tupou, 24 degrees from Liliʻuokalani Kapaakea, 24 degrees from Te Atairangikaahu Paki, 28 degrees from Bhumibol Adulyadej, 25 degrees from Claus van Amsberg, 22 degrees from Jan Sobieski and 33 degrees from Fionnuala O'Connor on our single family tree. Login to find your connection.