Question: What is the birthdate of this Anglo-Irish soldier and statesman who was one of the leading military and political figures of the 19th-century Britain, and for which Jean Victor de Constant Rebecque countermanded the order of him to evacuate Dutch troops? 
Sentence (from "Jean Victor de Constant Rebecque"): Jean Victor baron de Constant Rebecque (22 September 1773 – 12 June 1850) was a Swiss lieutenant-general in Dutch service of French ancestry.
Relevant evidence: Yes