Where does “Koizumi” come from?

Koizumi is a Japanese surname composed of the elements 小 (ko, "small") and 泉 (izumi, "spring" or "fountain").

Ancestry of “Koizumi”, step by step

StepLanguageWordMeaning
1Japanese小泉a placename, such that of a district in northwestern Nara Prefecture
2Japanese小smallness; small size, small; Short for 小の月;...
3Old Japaneseささ—
Every word from Old Japanese ささ →Every word from Japanese 小 →Every word from Japanese 小泉 →