Levie Biet was a son of Jacob Biet and Betje Kool. He married in Amsterdam on 20 November 1913 to Sara Schelvis, daughter of Mozes Schelvis and Marianne Wurms. The couple had four children together: Jacob (who survived the Holocaust)), Marianne, Elisabeth and Gretha.
City Archive of Amsterdam, archive card of Levie Biet and Sara Schelvis.