Mariia Grazhina Chaplin was born on 30 November 1981, in Lviv, Ukraine. Mariia's father, Anatoly Chaplin, was a well-known Soviet scientist in the field of antenna theory and technology. Mother, Khrystyna Blazhkevych, is a professor of Lviv National Music Academy. Mariia’s grandfather Bohdan Blazhkevych (28 August 1912 – 10 October 1986) was a doctor of technical sciences, Honoured Scientist of the Ukrainian SSR. Her great-grandmother Blazhkevych Ivanna was a famous Ukrainian children's writer, public figure and educator.