Old English word unnan comes from Proto-Indo-European *ān-, and later Proto-Germanic *unnaną (To grant, bestow.)

Detailed word origin of unnan

Dictionary entry	Language	Definition
*ān-	Proto-Indo-European (ine-pro)	to notice, to notice; face, mouth, to face, notice
*unnaną	Proto-Germanic (gem-pro)	To grant, bestow.
unnan	Old English (ang)	To grant or bestow (+ dat (person) + gen (thing)). To intercede. To wish.

Words with the same origin as unnan