FukuzawaJapanese From Japanese 福 (fuku) meaning "happiness, good fortune, blessing" and 沢 or 澤 (sawa) meaning "marsh".
KerrScottish, English From Scots and northern Middle English kerr meaning "thicket, marsh", ultimately from Old Norse kjarr.
KjærDanish Topographic name for someone living near a wetland, from Danish kær"marsh", from Old Norse kjarr "thicket".
KurosawaJapanese From Japanese 黒 (kuro) meaning "black" and 沢 or 澤 (sawa) meaning "marsh". A notable bearer was Akira Kurosawa (1910-1998), a Japanese film director.
LangbroekDutch From the name of a small town in the province of Utrecht, Holland, derived from lang meaning "wide" and broek meaning "marsh, wetland".
MarshEnglish Originally denoted one who lived near a marsh or bog, derived from Old English mersc"marsh".
MarstonEnglish From a place name derived from Old English mersc "marsh" and tun "enclosure".