Context : Prince Joseph Ferdinand of Saxe-Coburg and Gotha (full name Joseph Ferdinand Maria Michael Gabriel Raphael Gonzaga; 21 May 1869 - 13 August 1888), known in Brazil as Dom José Fernando, was a prince of the house of Saxe-Coburg-Gotha. 
Question : What was the date of Prince Joseph Ferdinand of Saxe-Coburg and Gotha's death?
13 August 1888