Bertha thoe Schwartzenberg

Bertha Koster-thoe Schwartzenberg en Hohenlansberg (1891-1993) was a Dutch sculptor.

Biography
Schwartzenberg was born on 	8 January 1891 in Rothenburg. She studied with Joseph Mendes da Costa. She was married to fellow artist Klaas Koster (painter) (1885-1969). Her work was included in the 1939 exhibition and sale Onze Kunst van Heden (Our Art of Today) at the Rijksmuseum in Amsterdam. She was a member of the Arti et Amicitiae, the Kunstenaarsvereniging Laren-Blaricum (Artists association Laren-Blaricum), the Nederlandse Kring van Beeldhouwersand (Dutch Circle of Sculptors), and the Vereniging van Beeldende Kunstenaars Hilversum (Association of Visual Artists Hilversum).

Schwartzenberg died in 1993 at Hilversum at the age of 102.