Ludwig Kasner (né Ludwik Marian Kaźmierczak; born 1896 in Posen, Germany (now Poznań, Poland), died 1959 in Berlin) was the paternal grandfather of Angela Merkel.

Herlind Kasner (née Jentzsch; born on 8 July 1928 in the Free City of Danzig, died 6 April 2019 in Templin) was the mother of Angela Merkel and a teacher of English and Latin.

[2] Willi Jentzsch (born 15 May 1886 in Wolfen, died 23 May 1936 in the Free City of Danzig) was the maternal grandfather of Angela Merkel.

He earned his Habilitation with the dissertation Electronic correlation in the quantum Hall regime at the Otto von Guericke University Magdeburg in 2002.

[4] During the Fall of Communism, Marcus Kasner was involved in the opposition movement in East Germany in the same small circle as his sister as she started her political career.

He was a friend of Günter Nooke, the founder of Democratic Awakening, and took part in political discussions on the future of the state.