quality:corruption, quality:correction, information:filtering
Indication of family membership status

Some Slavic cultures originally distinguished the surnames of married and unmarried women by different suffixes, but this distinction is no longer widely observed. Some Czech dialects (Southwest-Bohemian) use the form "Novákojc" as informal for both genders. In the culture of the Sorbs (a.k.a. Wends or Lusatians), Sorbian used different female forms for unmarried daughters (Jordanojc, Nowcyc, Kubašec, Markulic), and for wives (Nowakowa, Budarka, Nowcyna, Markulina). In Polish, typical surnames for unmarried women ended -ówna, -anka, or -ianka, while the surnames of married women used the possessive suffixes -ina or -owa. In Lithuania, if the husband is named Vilkas, his wife will be named Vilkienė and his unmarried daughter will be named Vilkaitė. Male surnames have suffixes -as, -is, -ius, or -us, unmarried girl surnames aitė, -ytė, -iūtė or -utė, wife surnames -ienė. These suffixes are also used for foreign names, exclusively for grammar; Welby, the surname of the present Archbishop of Canterbury for example, becomes Velbis in Lithuanian, while his wife is Velbienė, and his unmarried daughter, Velbaitė.

Many surnames include prefixes that may or may not be separated by a space or punctuation from the main part of the surname. These are usually not considered true compound names, rather single surnames are made up of more than one word. These prefixes often give hints about the type or origin of the surname (patronymic, toponymic, notable lineage) and include words that mean from, and son of/daughter of/child of.

The common Celtic prefixes "Ó" or "Ua" (descendant of) and "Mac" or "Mag" (son of) can be spelled with the prefix as a separate word, yielding "Ó Briain" or "Mac Millan" as well as the anglicized "O'Brien" and "MacMillan" or "Macmillan". Other Irish prefixes include Ní, Nic (daughter of the son of), Mhic, and Uí (wife of the son of).

A surname with the prefix "Fitz" can be spelled with the prefix as a separate word, as in "Fitz William", as well as "FitzWilliam" or "Fitzwilliam" (like, for example, Robert FitzRoy). Note that " Fitz " comes from French (fils) thus making these surnames a form of patronymic.