Time have engagement/wedding announcements about them:
- TIME
- TIME
Luitpold died from wounds received in a plane crash in action during WWII, in 1941.
By the time Princess Alexandrine died in 1962, one of her daughters, Thyra Antonie Marie-Therese Feodora Agnes zu Castell-Castell, was already married, and the other one, Amélie Alexandrine Helene Caroline Mathilde Pauline zu Castell-Castell, was around 24 years old.