Where does “合田” come from?

合田 (Japanese) comes from Japanese 田, from Japanese 熊田 — Kumada (neighborhoods in Japan).

Ancestry of “合田”, step by step

合田 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japaneserice paddy; cultivated field
2Japanese熊田Kumada (neighborhoods in Japan)

via Japanese

StepLanguageWordMeaning
1Japanese0.18039 liters, equaling ten shaku or a tenth of...
2Middle Chinesemeet, unite
Every word from Japanese 熊田