Where does “五十嵐” come from?

五十嵐 (Japanese) comes from Japanese 嵐, from Old Japanese あらし.

Ancestry of “五十嵐”, step by step

五十嵐 traces back through 3 separate lines of ancestry.

via Japanese 嵐

StepLanguageWordMeaning
1Japanese嵐a storm, tempest; a difficulty, discord, strife;...
2Old Japaneseあらし—

via Japanese 五十

StepLanguageWordMeaning
1Japanese五十fifty, 50; a fifty-year-old; a large quantity
2Middle Chineseこしゆう—

via Old Japanese か

StepLanguageWordMeaning
1Old Japaneseか—
Every word from Old Japanese あらし →Every word from Japanese 嵐 →