Need ancestry of HERMANN FRIEDRICH WILHELM KNAAK, b. May 31, 1881 in Friedland, Mecklenburg, Germany. Parents known to be FRIEDRICH & WILHELMINE JOHANNA FRIEDERICKA (SCHULTZ) KNAAK. FRIEDRICH may have been married twice, possibly to a LUCHTERHAND, previous to or after marriage to SCHULTZ. Possible siblings or half siblings of HERMANN may be ERWIN, RUDOLF & IDA KNAAK.