Additional data from member contributors
BillionGraves.com record for Всеволодь Костомаровь (24 January 1869 - 25 May 1930), BillionGraves Record Poznań, Cm. prawosławny Garnizonowy św. Mikołaja (Cytadela), Poznań, m. Poznań, Greater Poland Voivodeship, Poland, Europe