In the 1990s, it was suggested that Maria might have been the grand duchess whose remains were missing from the Romanov grave that was discovered near Yekaterinburg, Russia and exhumed in 1991.
Pada 1990-an, diisukan bahwa Maria mungkin merupakan adipati wanita agung yang sisa-sisa jenazahnya hilang dari pemakaman keluarga Romanov yang ditemukan di dekat Yekaterinburg, Rusia dan digali pada 1991.