The date of death for XXX is what?
Ulrich, 10th Prince Kinsky of Wchinitz and Tettau
Ulrich, 10th Prince Kinsky of Wchinitz and Tettau (German: Ulrich Ferdinand Adolf Antonius Bonaventura Maria Fürst Kinsky von Wchinitz und Tettau; 15 August 1893 -- 19 December 1938) was the titular pretender Prince Kinsky of Wchinitz and Tettau.
19 December 1938