The 34-year-old man who died following last Thursday's crash on the N14 near Raphoe was a father of five.
Ciaran Parker, a native of Belfast who had been living in Strabane, was the sixth person killed on Donegal's roads within an eight day period.
The car he was driving was involved in a collision with a lorry on Thursday at Tullylap on the Letterkenny to Lifford Road, between Rossgier and Raphoe.
Both he, and a teenage girl who was his passenger, were brought to Letterkenny University Hospital.
He was pronounced dead in the early hours of Friday morning.
The teenager suffered serious injuries while the driver of the lorry escaped injury.
Mr Parker's remains are being waked at the home of his parents, Betty and Tony Parker in the Whiterock area of Belfast.
He will be laid to rest tomorrow following requiem mass at 10 am in Corpus Christ Church.
He is survived by his parents, brothers Tony and Martin, sister Lisa and his children Lisa Marie, Jane, Tiarna, Ciaran and Niamh.
Up until the end of July, there had been one fatality on Donegal's roads this year.
Then, five people lost their lives in two crashes which occurred within one day.
Barney McGinley (28) and Dermot Boyle (19), both from Letterkenny, died when the grey Mitsubishi Charisma hatchback car they were travelling in collided with a yellow Renault Master van on the N13 at Trimragh, just outside Letterkenny at around 4.45am on July 27.
Stephen McCafferty (19) of Lismonaghan, Letterkenny, Teresa Robinson (20) of Dromore, Killygordon and Kaylem Ó Murachaidh (19) Cloghan Mór, Cloghan were killed in a two vehicle collision at Drumkeen at around 1am on July 28.
Gardaí are asking anyone with information on all three accidents to contact them in Letterkenny on 074 916 7100.