Agnes f. Greek ἁγνή 'pure, chaste'.
The name of a 3rd C saint, an 11th C queen consort of France, an 11th C queen of Castille and Leon, an 11th C queen of Aragon and Navarre, an 11th C Holy Roman empress, a 12th C queen of Aragon, a 12th C Italian saint, a 12th C queen consort of Hungary, a 12th C queen consort of Jerusalem, a 13th C queen consort of Denmark, a 13th C Byzantine empress, and a 14th C queen consort of Portugal.
The popularity of Saint Agnes of Rome (3rd C) contributed to this name's enduring popularity throughout all of Europe and all of the Middle Ages.
The English diminutives Annot and Anot are witnessed in 1379 in the relational bynames Annotsoñ (WRYPT1 p. 170) and Anotsoñ (WRYPT1 p. 23).