Johanna Biet was a daughter of Barend David Biet and Rebecca Flesschedrager. She married Salomon van de Kar in 1897 in Amsterdam. He died in 1923. She remarried Abraham Bartels in 1924 in Amsterdam. He died in 1930. Johanna had a stepdaughter Evelina.
Stadsarchief Amsterdam, archiefkaart Johanna Biet