Christoph Waltz

Waltz in 2011, photo by PR Photos
Place of Birth: Vienna, Austria
Date of Birth: 4 October, 1956
Ethnicity: German, Austrian, likely small amount of Slovenian
Christoph Waltz is an Austrian actor. He has twice won the Academy Award for Best Supporting Actor, for Inglourious Basterds (2009) and Django Unchained (2012).
Christoph is the son of Johannes Waltz and Elisabeth Urbancic, set and costume designers. His father was German and his mother is Austrian. He is fluent in French, German, and English.
Christoph is married to costume designer Judith Holste. He has three children from his first marriage, and a daughter with Judith. One of his children with his Jewish first wife has studied at a Yeshiva in Israel.
Christoph’s maternal grandfather was Rudolf von Urbantschitsch or Urban (the son of Viktor Urbantschitsch and Caroline Fröschl). Rudolf was a psychiatrist, who wrote the book Sex Perfection and Marital Happiness (1949). He was born in Vienna, and died in Carmel, California. Christoph’s great-grandfather Viktor was the son of Alois/Alojša Urbantschitsch/Urbančič, who was born in Preddvor, Slovenia, and of Wilhelmine/Wilhelmina Mengele.
Christoph’s maternal grandmother was Austrian actress Maria Mayen (the daughter of Ignaz Mayen).
Sources: http://www.mainpost.de
Genealogy of Christoph Waltz – http://www.geni.com
Biography of Christoph’s maternal grandfather, Rudolf von Urban – http://en.wikipedia.org
Biography of Christoph’s maternal great-grandfather, Viktor Urbantschitsch – http://pl.wikipedia.org
Christoph’s maternal grandmother, Maria Mayen, at the German Wikipedia – http://de.wikipedia.org
https://www.wikitree.com/genealogy/Urbantschitsch-Family-Tree-2
Alojša Urbantschitsch/Urbančič was born in Preddvor, Slovenia, according to: https://en.wikipedia.org/wiki/%C3%96sterreichisches_Biographisches_Lexikon_1815%E2%80%931950
his page: http://www.biographien.ac.at/oebl/oebl_U/Urbantschitsch_Viktor_1847_1921.xml
I believe it’s a reliable source.
1/16 Slovenian then.