The funeral of 18-year-old Andrew O'Donnell, who died while on holiday in Greece, has taken place in Dublin.
He was one of two Leaving Certificate students, from St Michael's College, who died in separate incidents on the Greek island of Ios.
Andrew's funeral mass took place at the Church of the Sacred Heart, in Donnybrook; the same church in which the funeral of his friend and classmate Max Wall took place earlier this week.
Opening the mass, parish priest Monsignor Ciarán O'Carroll said that Andrew had a larger than life personality and had "brought great joy to the lives of his family and friends".
He said the teenager had a vibrant spirit, a kind heart, unfailing loyalty and "a sense of humour that brightened the darkest of days".
Hundreds of mourners attended the mass, including students from St Michael's College and from the wider rugby community.
Several public representatives were also in attendance, including an aide-de-camp to President Michael D Higgins and Minister for Enterprise Simon Coveney.
Principal celebrant was Fr Paddy Moran, the chaplain to St Michael's College, who celebrated the graduation mass for Andrew and Max just a few weeks ago.
During the mass, gifts were brought to the altar symbolising Andrew's love of sport, music and his pets.
In his homily, Fr Moran expressed his deepest sympathy to Andrew's parents Bebhinn and Gavin and to his younger brother Rory.
He said Andrew had a future that promised wonderful things, saying he had applied for places in different English universities.
"If things had been different who knows where his life might have brought him? For some unfathomable reason that we will never understand, that promising future was cruelly taken from Andrew," Fr Moran said.
"A simple fall on a mountain top took his dreams, his hopes, his ambitions."
He read aloud the Mother's Day card Andrew had given to his mother and messages to him from his friends and classmates in St Michael's College, including one that said Andrew "had a smile that lit up the world and filled every room with laughter and joy".
Fr Moran said Andrew's time on earth was short, but it was an inspiration to see how many lives he had impacted.
"Everywhere you were was made better by your presence," he said, adding that "your absence will be acutely felt."
