Who dated Ivan Ivanovich Lutskevich?

Ivan Ivanavič Luckievič (Belarusian: Іва́н Іва́навіч Луцке́віч; Lithuanian: Ivanas Luckevičius; Russian: Ива́н Ива́нович Луцке́вич; 9 June 1881 – 20 August 1919) was a leading figure of the Belarusian independence movement in the early 20th century, publicist and archaeologist. He was a brother of Anton Luckievič.