Fr Forristal (82) passed away at St Joseph's Centre, Crinken, in Shankill at 7.15pm last Sunday night.
A nursing home spokesperson said he "died peacefully" after his condition deteriorated over the last few days.
He was parish priest in Dalkey before he was admitted to the home 10 years ago.
Born in Dublin in 1930, Fr Forristal was ordained in 1955 and was best known for his work as part of the Radharc team, which produced films on religious topics for RTE.
Radharc was the country's first independent television production unit.
Fr Forristal worked first as a writer and later a director.
Fr Forristal was also an author, and his plays were staged at the Abbey Theatre.
The death has occurred of Fr. Desmond FORRISTAL of Dalkey, Dublin
Late P.P. of Dalkey. Peacefully, in the loving care of all the staff at St. Joseph's Centre, Crinken, Shankill. Deeply regretted by his brother Ciaran, sister-in-law Flicka, nephew Timothy, his devoted and faithful housekeeper, Phyllis Totterdell and his close friend Sr. Jane Carey, Archbishop Martin and his brother priests in the Dublin Diocese, his many friends and the parishioners in Dalkey.
Removal on Wednesday to the Church of the Assumption, Dalkey arriving at 5pm. Funeral Thursday after 11.30am Mass followed by Burial immediately afterwards in Glasnevin Cemetery.
Date published: Monday, September 10, 2012
Date of death: Sunday, September 09, 2012