In 1918, Kaiser Wilhelm II of Germany abdicated and a council of People's Delegates assumed power.

CNN: Saturday,

In 1941, Kaiser Wilhelm II, ninth king of Prussia and third German emperor from 1888-1918, died in exile in the Netherlands.

CNN: Wednesday,

Countless attempts were also made on the lives of bigger names, such as King Alfonso XII of Spain (1878), Kaiser Wilhelm I of Germany (May and June 1878), Andrew Carnegie's business partner, Henry Clay Frick (Pittsburgh, 1892), a Serbian minister (Paris, 1893) and King Alfonso XIII and his English bride (Madrid, on their wedding day, 1906).

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Mr. Prinz von Preussen, who is the great-great-grandson of Wilhelm II, the last German kaiser, spoke with The Wall Street Journal by email.

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