Boyadzhik massacre
The Boyadzhik massacre (Bulgarian: Бояджишко клане) was the massacre of 145 Bulgarian civilians committed by irregular Ottoman troops in the Bulgarian village of Boyadzhik on and after 24 May [O.S. 11 May] 1876.
The massacre took place in the wake of the Bulgarian April Uprising, even though Boyadzhik did not participate in the insurrection and was located hundreds of kilometres away from the scene of any hostilities. The grandfather of the inventor of the first electronic digital computer, John Vincent Atanasoff, was among the victims.