A rosary in memory of the late Carl Henderson will be held at Errigal this afternoon.
The Armagh man died after collapsing while climbing Errigal Mountain on Saturday afternoon.
Emergency services received the call shortly after midday when Mr Henderson, who was aged in his 40s, became seriously ill whilst climbing the mountain.
He was then airlifted to Letterkenny University Hospital, where he was later pronounced dead.
Rosary
The rosary held by Fr Donnchadh Ó Baoill will take place at Errigal Mountain today at 4pm.
Carl was the son-in-law of the late Maeve Ryan (née Greene) of Magheralosk.
Formerly of Crolly Caravan Park and Moira, Co. Armagh.
Deeply regretted and sadly missed by his loving wife Caroline (née Ryan), his children Aibhilin, Rian and Caoimhe, and all his extended family and friends.