RUGBY player and UCD student Niccolai (21) was from Terenure.
Nick, as he was known to his friends, attended St Mary's College in Rathmines where both his brothers also studied.
He is survived by his parents John and Graziella.
He travelled to Ghana in 2010 as part of a group of student volunteers for his school's Ghana immersion project.
Friend Alex Gogarty paid tribute to a "true king" and "gentleman".