Nikifor Grigoriev (commonly known as Ataman Grigoriev; also known as Matvey Grigoriev and Mykola Grigoriev, born Nychypir Servetnyk; circa 1885 - July 27, 1919) was a Ukrainian insurgent "Green Army" leader during the Russian Civil War. Grigoriev was a Cossack officer in the Russian Imperial Army from the region of Kherson. During the First World War, Grigoriev was awarded Cross of St. George medal for bravery. Wikipedia
The definitive Wikipedia entry for Nikifor Grigoriev. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Nikifor_Grigoriev
