Count Luitpold of Castell-Castell

Luitpold was a First Lieutenant in the German Army during World War II. He died of his injuries from an airplane crash in action at a military hospital at Bankya near Sofia, Kingdom of Bulgaria on November 6 or 8, 1941 at the age of 36. Luitpold was interred at Bankya, and reinterred in the Castell-Castell family plot at the cemetery in Hochburg.

Luitpold and Alexandrine-Louise were married on January 22, 1937 at Christiansborg Palace in Copenhagen, Kingdom of Denmark. Footage of the wedding on nitrate film is preserved by the Danish Film Institute in their bunker archive for nitrate film at Store Dyrehave in Hillerød. According to the film archivist Karin Bonde Johansen regarding the scenes captured by the film, "the atmosphere looks cheerful and wild looking, but unfortunately there is no audio to the footage."

Luitpold's engagement to Princess Alexandrine-Louise of Denmark, third child and daughter of Prince Harald of Denmark and his wife Princess Helena Adelaide of Schleswig-Holstein-Sonderburg-Glücksburg, was announced on August 24, 1936 by special permission of Alexandrine-Louise's uncle Christian X of Denmark. Until the announcement, Alexandrine-Louise had been frequently mentioned as a possible queen consort to Edward VIII. The couple met for the first time in Berlin during the 1936 Summer Olympics. Following their first meeting, Luitpold and Alexandrine-Louise spent nearly every day together. Before her departure from Berlin, Luitpold proposed marriage and Alexandrine-Louise accepted. At the time of their engagement announcement, Luitpold was a law student residing in Munich.

Count Luitpold Alfred Friedrich Karl of Castell-Castell (German: Luitpold Alfred Friedrich Karl Graf zu Castell-Castell) (born November 14, 1904 in Langenzell, Wiesenbach, Grand Duchy of Baden; died November 6 or 8, 1941 in Bankya near Sofia, Kingdom of Bulgaria) was a staff officer in the German Army during World War II and a member of the extended Danish Royal Family through his marriage to Princess Alexandrine-Louise of Denmark. Luitpold was a Count of Castell-Castell and a member of the Comital House of Castell-Castell.

Luitpold was born on November 14, 1904 in Langenzell, Wiesenbach, Grand Duchy of Baden and was the eldest child and son of Count Otto Friedrich of Castell-Castell and his wife, Princess Amélie of Löwenstein-Wertheim-Freudenberg.