April 13 Van Cliburn 1777 – American Revolutionary War: British and Hessian forces conducted a surprise attack against a Continental Army outpost at Bound Brook, New Jersey. 1829 – The Roman Catholic Relief Act received royal assent, removing the most substantial restrictions on Catholics in the United Kingdom. 1958 – In the midst of the Cold War, American pianist Van Cliburn (pictured) won the inaugural International Tchaikovsky Competition in Moscow. 2009 – Twenty-three people died in a fire at a homeless hostel in Kamień Pomorski; it was Poland's deadliest fire since 1980. 2017 – War in Afghanistan: In an airstrike in Nangarhar Province, the U.S. military dropped the most powerful conventional bomb used in combat. Henry De la Beche (d. 1855)Annie Jump Cannon (d. 1941)Günter Grass (d. 2015) More anniversaries: April 12 April 13 April 14 Archive By email List of days of the year About