from Wiktionary, Creative Commons Attribution/Share-Alike License
- proper n. A patronymic surname.
- proper n. A male given name transferred from the surname; mostly of persons born before 1950.
- proper n. A female given name taken into general use in the 1940s; usually interpreted as a spelling variant of Alison.
From a Middle English diminutive form of Alan, Alexander or Alice + -son. (Wiktionary)