A notable bearer of the surname Hisakawa is Japanese voice actress and singer Aya Hisakawa (久川 綾). Some of her roles include Sailor Mercury in 'Sailor Moon', Skuld in 'Oh My Goddess!', and Yuri Tsukikage (a.k.a. Cure Moonlight) in 'HeartCatch Pretty Cure!'.Here's a link to Aya Hisakawa's Wikipedia page: https://en.wikipedia.org/wiki/Aya_Hisakawa.
The meaning "market place by the river" would result in the surname being written as Ichibagawa (市場川), not Hisakawa, since 市場 means "marketplace."The first kanji used for Hisakawa is 久 which means "long time, old story," so the meaning for Hisakawa (久川) would actually be "river of forever." [noted -ed]