Mr Bewley passed away, aged 77 on St Stephen's Day after a long illness.
He was involved in the iconic Irish company for 53 years and was the great grandson of the company’s founder, Joshua Bewley.
According to his death notice on Rip.ie, Mr Bewley died peacefully with his family by his side at home.
“Beloved husband of Shirley, much loved father of Simon and Craig, father-in-law of Aisling, adored Grandad of Alannah, Kate and Amy, Joshua and twins Eli and Jacob, loving brother of Michael, Roger and Claire, brother-in-law of Debbie and Robin,” it reads.
“He will be sadly missed by all his family, relatives and friends.”
A private Quaker Funeral Service will take place in the Churchtown Meeting House, Dublin 14 on Friday, December 31 at 10.45am.
It requests that donations, if desired, are made to the Irish Cancer Society.
In the condolences section, one person said they knew Patrick Bewley when they worked in head office at Northern Cross.
“He was an absolute gentleman, always with a smile and kind word to whoever he met,” they have written. “He’ll be sadly missed.”
Another added: "So sorry to hear of the passing of Mr Patrick Bewley. My deepest sympathy to his family and friends.
"I had the greatest pleasure and fond memories of working in Westmoreland Street many years ago and Mr Patrick was always a gentleman with a great sense of humour.”
One friend said: “I will miss Paddy so much having run/walked with him every Sunday for nearly 30 years. He was such an interesting, kind, family man and wonderful person with a sense of fun and adventure.”
Another person offered “Sincere sympathy to Craig, your Mum and Simon on the death of your Dad, Paddy. I never had the pleasure of meeting him but he must have been an exceptional person and I have no doubt you will miss him dearly. My thoughts are with you at this sad time.”
Mr Bewley was born in 1944 in Knocksedan House, a farm in Swords in Co Dublin.
He joined Bewley’s at 21, later becoming the manager of the Bewley’s cafe in Westmoreland Street, Dublin, before serving as managing director of the company from 1977 to 2003.
Paddy Campbell, whose family acquired the Bewley’s business in 1986, paid tribute.
“In his own quiet, determined way, Paddy Bewley made an immense contribution, not just to the success of Bewley’s over the past 35 years, but to improving the lives of others in need,” he said in a statement.
“Paddy did tireless work for the Hospice Foundation and the Mendicity Institution amongst others.
“He was one of the finest people I have known in my business life, a great sportsman and a true friend indeed.”
Jason Doyle, the managing director of Bewley’s Tea and Coffee, said: “The value Paddy added over his lifetime, not only to our business but to the wider Irish coffee industry, is incredible.
“Anyone who is anyone in the Irish coffee industry has come through the Paddy Bewley school of coffee.
“His enthusiasm and willingness to share his knowledge was always infectious and I wouldn’t have the love that I have for coffee today without Paddy.”