Where does “eawer” come from?

eawer (Old French) comes from Latin aquarium, from Latin aquarius, from Latin aqua, from Proto-Italic akʷā, from Proto-Indo-European h₂ekʷeh₂ — water, flowing water.

Ancestry of “eawer”, step by step

Step	Language	Word	Meaning
1	Latin	aquarium	nominative neuter singular of aquārius
2	Latin	aquarius	of or pertaining to water; a water carrier; an...
3	Latin	aqua	water
4	Proto-Italic	akʷā	water
5	Proto-Indo-European	h₂ekʷeh₂	water, flowing water

Every word from Proto-Indo-European h₂ekʷeh₂ →Every word from Proto-Italic akʷā →Every word from Latin aqua →