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Son of Axel Proos and Kerstin Olsson Husband of Elsa Gudrun Birgit Proos Brother of Erik Axel Proos; Margareta Elisabet Jonsson; Olof Henry Proos; Signe Fredrika Ek; Rolf Arne Proos and 2 others; Stig Proos and Helge Proos « less Half brother of Nils Gustaf Jakob Olsson