The Berlin newspaper Tagblatt has published a letter that showed the "drastic methods" used by the former Kaiser Wilhelm II, when attempting to discipline members of his family. According to the letter, Wilhelm "gave a piece of his mind" to Princess Anna of Hesse, the widow of Landgraf Friedrich of Hesse, who informed the Kaiser that she was converting to the Roman Catholic church. This decision infuriated the Kaiser, who "refused to regard her any longer as a Hohenzollern and ordered her to case all intercourse with that family."
In the final paragraph of the letter, the Kaiser wrote: "The House of Hohenzollern expels you and has forgotten your existence."
The letter was written in 1901. The Princess was not intimidated by the Kaiser's threats, and joined the Roman Catholic church.
Princess Anna was born in 1836. In 1853, she married Friedrich, the Landgraf of Hesse as his second wife. (His first wife, Grand Duchess Alexandra died in childbirth in 1844.)
Anna and her husband had six children: Friedrich Wilhelm (died at sea in 1888); Elisabeth (married Prince Leopold of Anhalt-Dessau); Alexander Ferdinand (renounced his rights as head of the House in 1925, when he married morganatically); Friedrich Karl (who succeeded Alexander as head of the house in 1925); Marie (who died at age 10 in 1882), and Sybille (who is divorced from Baron von Vincke.)
Princess Anna was the daughter of Prince Karl of Prussia and Princess Marie of Saxe-Weimar. She died in 1918 at the age of 82.
Prince Friedrich Karl is married to the Kaiser's sister, Margarete.