The story
- Proto-Germanic · derived from*nesaną“to heal, recover”
- Old Norse · derived from*hernest
- Old French · derived fromhernois“equipment used in battle”
- Anglo-Norman · derived fromharneis
- Middle English · inherited fromharneys
- English todayharness
From Middle English harneys, harnes, harneis, harnais, herneis, from Anglo-Norman harneis and Old French hernois (“equipment used in battle”), believed to be from Old Norse *hernest, from herr (“army”) + nest (“provisions”) (from Proto-Germanic *nesaną (“to heal, recover”)). More at harry.
Etymology from Wiktionary, CC BY-SA 4.0.