Alexander Louis de Leeuw was a son of David Jacob de Leeuw and Rosette Baroche Hamburger. He was born in a family with five children. His brothers were Joseph, Jacob David, Emanuel and Abraham.
Alexander Louis married in Amsterdam on 10 June 1900 to Barto de Jong, who passed away there on 4 May 1930. The couple had two children: Gerrit and a daughter who has survived the Holocaust.
City Archive of Amsterdam, archive card of Alexander Louis de Leeuw, Anette de Leeuw and addition of a visitor of the website.
A Liro card exists for this person or family. The original cards are kept at the Nationaal Archief (National Archive) at The Hague.