The name Islwyn is primarily a male name of Welsh origin that means Below The Grove.
In addition to being a given name, Islwyn was a local government district of Gwent in Wales.
Famous bearers: Islwyn Davies, rugby player. Islwyn Davies, priest. Islwyn Ffowc Elis, Welsh writer. Islwyn Evans, rugby player. Islwyn Jones, footballer. Islwyn Morris, Welsh actor.