From “Before You Begin,” in The Fam­i­ly Romanov:

“Rus­sians have three names: a first name, a father’s name with –ovich or –evich added (mean­ing “son of”) if male, or –evna or –ovna (mean­ing “daugh­ter of” if female); and a last, or fam­i­ly name.

“There­fore, Nicholas II’s daughter’s full name was Anas­ta­sia Niko­laev­na Romano­va; his son’s full name was Alex­ei Niko­lae­vich Romanov.”