The story
- Proto-Germanic · inherited from*karlas wagnaz
- Old English · inherited fromcarles wǣn
- Middle English · inherited fromCharlewayn
- English todayCharles' Wain
From Middle English Charlewayn, from Old English carles wǣn, apparently from a common Proto-Germanic *karlas wagnaz (cognate with forms in other Germanic languages, e.g. Swedish Karlavagnen). It seems that this common Germanic name originally meant the ‘peasant's wagon’ (the churls' wagon) in contrast to the ‘woman's wagon’ (Ursa Minor). Later it was interpreted as ‘Charles's wagon’ and associated with Charlemagne.
Etymology from Wiktionary, CC BY-SA 4.0.