Daniel (Donie) O'Callaghan

My deepest sympathy to Carina and Jason on the death of your dad May He Rest in Peace

It was with great sadness that I heard of Donie's passing. Only know Donie for a few years but found him to be a true gentleman and friend. Will miss meeting up with him for coffee, the chat and solving the world's problems. Deepest sympathy to Jason, Grace and the O'Callaghan family. Ar dheis Dé go raibh a anam.

My sincerest condolences to Donie's family at this difficult time.

Donie was a gentleman who was, generous, kind and professional. A rare combination things today. He was very helpful and gave me great advice when I was making some changes to my life.

He will be missed by all who knew him.

Circumstances meant we did not know eachother well but I always appreciated the kindness Donie showed me. That kindness is only reaffirmed by all the messages showing the ways he touched different peoples lives. I'm sorry this message is late but we have been thinking of all his loved ones since we heard the news x

Sorry for your lose, remembered from Molly Malone's, RIP Donie

Donie was a powerful force of nature unleashed and unstoppable, a gorgeous giant generous human being. We had many cups of tea together on our regular meet ups. Thanks for being you Donie!

Jason and Grace, sincere condolences on the loss of your Dad. May he rest in peace.

So sorry to hear of his passing. One of the kindest people I had the pleasure of knowing. Condolences and love to all his family, he will be missed.

Pleasure and honor, knowing & working with Donie, he will be sadly missed. May He RIP

Sincere condolences to you all during these sad times.

Deepest sympathy to Jason and Grace and all the O Callaghan family. May Donie Rest In Peace. God Bless His Soul. Paula & Ingo Johansson

So sorry to hear of Donie's passing. May he rest in peace. Condolences to his family and friends

I am so sorry to hear of the passing of my dear friend Donie. Rest in peace Donie.David Duffy Kildare.

"Sleep peacefully my friend."
Condolences to all Donie's family. He will be missed by many.

Condolences Jason and family on your loss . RIP.

Very shocked & sorry to hear of Donie's passing. Our condolences to Grace, Jason & family.

Sorry to hear the sad news RIP Donnie

Condolences to Jason and Grace on the loss of your Dad. May he Rest in Peace

Deepest condolences to Donie's family including his only sister Mary, brother in law Tom and all the family. May Donie rest in peace in the love and Light of God.

The Great State of Texas and Friends of Chuck are sad to hear of your passing my friend, Donie! You were such a force in the security world and helped many, including me! Thanks for all you did with ASIS International, too. We will miss you! I will be playing “Danny Boy” in your honor in Texas this weekend with a Pint held high!!

Goodbye old friend, happy memories of our time spent on the front line in Clery’s & The Gresham Hotel many years ago. Rest in Peace.

Shane & Mona O’Leary

I am very sad to hear about Donie. He was a valued loyal friend for nearly 30 years . I know he loved his family above everything else and was very proud of Grace and Jason .
RIP My Dear Friend
A Mass will be said for Donie 25th Oct at 10.30 Good Sheperd Church Deans Grange

I’m so sorry and sad to hear about the passing of Donie.
I met Donie in 2012 at the ASIS International European Conference in London, U.K., where he kindly offered to (again) support ASIS in Europe. We have met on many occasions ever since (unfortunately only virtual the past 6 months) and I was always impressed by his knowledge and drive, and very much appreciated his kindness and enthusiasm.
He was an active member and volunteer leader, and a kind man with a great sense of humour, it was always a pleasure to meet him. He will be missed by all his colleagues and friends from ASIS International globally and the wider security profession.
We wish Donie’s family and friends much strength and hope that the many tokens of appreciation for who he was will ease the pain of their loss.

Very saddened today to hear of Donie's passing, he was a true gentleman of whom I spent some time with through the ASIS organization, He will be sadly missed. Thoughts and prayers to his family at this tough and difficult time. Rest in peace Donie.

I got to know Donie through the Executive Protection Institute. It is hard to imagine he is gone. He was such a lively figure. We had recently reconnected via Facebook. I shall miss his posts and his comments on mine. Condolences to his family and friends.

A terrible loss to his family and friends. Donnie was a pioneer of the Irish security and investigation industry and his legacy will live on. RIP Donnie

I’m sorry to hear of Donie’s passing. I spoke with him recently. I have fond memories of my visit with him in Dublin and his visit in New York and going out to dinner with my family. I will miss my Irish friend. Condolences to his children and family. God Speed Donie!

I am so sorry to see the passing of Donie, such a lovely gentleman. Always a good story to tell, it was so good to know him. May he rest in peace x Irene

A terrible loss, not only to the security community but more so to Donies family and many many friends. I remember the old days with great sadness my friend. Rest well now you made all who knew you better people by your presence. RIP big man.

Condolences to Donie’s family. He was a true gentleman.

I was saddened to hear the passing of Donie, he was a true gentleman with such a kind soul.
RIP Donie

An absolutely lovely man, my heart felt condolences to his family and friends.

So sorry to hear of the passing of Donnie. RIP

Goodbye old friend ill miss the chats. My condolences to your family. The world has lost a beautiful soul

Goodbye old friend ill miss the chats. My condolences to your family. The world has lost a beautiful soul

Donnie was a beloved security management practioner, member, volunteer, and friend to many in the ASIS International family. He will be remembered most for his honesty, dedication, self-less leadership, and contributions to the global profession. He will be missed. We send our sincere and heartfelt condolences to Donie's family and friends.

An absolute gentleman who contributed so much to many of us within the security industry. Condolences to all the family members and friends.

Heartfelt condolences Jason and all your family....such a terrible time for you all. You are in our hearts and prayers at this very sad time. RIP Daniel...

Condolences Jason and family on the sad passing of your dad, May he rest in peace x

Really sorry to hear the sad news.Rest in peace Donnie.

Rest in Peace Donie, you’ll be sadly missed. Thanks for your contribution to the security industry and for all your help and advice along the way.

A gentlemen and a true professional, somebody who will be missed in the Security industry.

Condolences to all family members at this difficult time.

Rest in Peace Dear Donnie. Will always remember our discussions. Sincere condolences to the family

So sorry for your loss Jason and Grace.

Deepest Sympathy. RIP

Still in shock at the passing of my friend of 50 years condolences to Jason Grace and families and his sister Mary and her family. Rest in peace Donie love Marian xxxx

So sorry to hear.
Donie was a gentleman.
My thoughts are with you at this sad time.

A true gentleman, a wise man, and the genuine article. Your good advice and smiling face and big heart will be sadly missed.
Slan le mo chara....

Sincere sympathy to Mary & Tom and all of Donal's family on his passing. May he RIP

So very sorry Our Dear Friend . We will miss your Laughter and Advice, Your support to My Son and Your Nephew. Your Support Through Jimmys Illness. Rest in Peace

My deepest condolences to Jason, Grace and the entire O'Callaghan family on the loss of my great friend Donie. I am still in shock following the news of his passing. I will cherish the memories, the stories and the many cups of coffee we shared over the past 30 years. My thoughts and prayers are with you all at this very sad time.  Ar dheis Dé go raibh a anam.

Sincere sympathy. Rest in peace my friend.

Very sorry to hear about the passing of Donie, I had the pleasure of meeting him on his trip to the States (Virginia). He was a true gentleman and a pleasure to talk to, a very genuine person and all around funny guy. You will be missed my friend, Rest In Peace.

RIP my friend. My condolences to your family.

I’m shocked and devastated to hear of Donie’s untimely passing. He was a gentlemen and will be sadly missed by all who had the pleasure to know him. My deepest sympathy to his family. RIP my friend.

Heartfelt condolences to you Grace and Jason on the sudden loss of your dad, thinking of you all, may he rest in peace xxx

I am so sorry to hear of Donie's passing. I enjoyed his company on several occasions and he was a very witty, funny person and an absolute gentleman. Deepest condolences to all the family. May Donie rest in peace X

Many a great chat we had about diverse and deep subject matter. May you ruffle a feathers amongst the angels Donie. RIP

We are so sorry to hear of Donie,s passing , you have our deepest sympathy, you are in our prayers R.I.P.

So sorry to hear the sad news of the passing of your father. Thinking of you and your family in these sad times. Judith & Donal