Where does “Уэлсли” come from?

Уэлсли (Russian) comes from English Wellesley, from English Wells, from English -ville, from French ville, from Middle French ville, from Old French ville, from Latin vīlla, from Latin vetera — Derives action nouns from verb roots.

Ancestry of “Уэлсли”, step by step

StepLanguageWordMeaning
1EnglishWellesleynamed for the estate of local benefactor Horatio Hollis Hunnewell
2EnglishWellsfor someone living near a well or a spring
3English-villeUsed to form a name of an inhabited place, a town...
4Frenchvilletown, city
5Middle Frenchvillecity or town
6Old Frenchvillecity or town
7Latinvīllacountry house; villa
8Latinveterathe old; old times, ancient times, antiquity
9Latinvetusold, aged, elderly, ancient; long-standing;...
10Latin-tusForms the past participle of verbs; Forms...
11Proto-Italic-tus
12Proto-Indo-European-tusDerives action nouns from verb roots
Every word from Proto-Indo-European -tusEvery word from Latin -tusEvery word from Latin vetus