I have traced my grandmothers family of Vojaks (Wogak) and several other spellings back to 1740 in the town of Mlada Vozice, CZ. The women who married the male Vojaks were named Stibral in two different generations 50 years apart, and Kazda, Koblic, Pivonky, Blazda, Charrvat.
Two of them were Anna but they did not live in Maryland.