In Lithuania, the Russians hang Polish Insurrection leader General Zymund Semiakowski
Zygmunt Seriakowski was a former Russian Army officer and a military leader in the Polish Insurrection against the Russian Empire. Wounded and captured in battle the month before, he was tried and hanged in Vilnius, Lithuania, despite intense foreign lobbying for clemency. The Polish Insurrection went on till the following year when it was finally crushed. (By John Osborne)
W.A. Day, The Russian Government in Poland: with a Narration of the Polish Insurrection of 1863 (London: Longmans, Green, Reader, & Dyer, 1867), 215.