When Berend Modderman was born on 18 January 1870, in Winschoten, Groningen, Netherlands, his father, Edzard Johan Modderman, was 34 and his mother, Jantina Haitzema Viëtor, was 23. He married Sjoukje Sijbrens Van der Leij on 27 September 1900, in Haarlem, North Holland, Netherlands. They were the parents of at least 1 son and 1 daughter. He died on 19 February 1944, at the age of 74.
German: variant of Behrend . This surname is also found in Poland and Denmark.