Christopher David (Chris) Callaghan was born in Southern Africa of Irish decent, dying on Monday 2nd December 2019 in Fermoy, Ireland (see death notices: RIP.ie & Cork Beo) with his ashes being scattered on Knysna lagoon South Africa, a region where he had spent many happy married years with the renowned artist, Barbara Barrett. He was the great grandson of Admiral of the Fleet, Sir George Astley Callaghan. His family dropped the 'O' in 1758 to side-step the Penal Code, then in force in Cork. His ancestor at the time, a one Sean O'Callaghan, thus became John Callaghan. John's son, Dan (1760-1824) became one of Cork's major merchants; supplying Wellington's fleet anchored in the Cove of Cork to dissuade Napoleon from attempted to attack up the back door (eg Bristol & Liverpool). In 1966, while living in Rhodesia, Chris received a cheque for £500, as his share of Dan's fortune. The Southern hemisphere played a hand in Chris' rich heritage giving him, for example, an Australian grandmother and a happily married period of life in Knizner South Africa. Earlier in his life, Chris had spent 2½ years "studying" Pure and Applied Maths, Organic and Inorganic Chemistry, Physics (including crystallography) and Geology. In Sept 1959, he exchanged his text and note books for cash, caught the fortnightly mail‐ship at Cape Town for Southampton, obtained a foot‐holding in advertising at 40 Berkeley Square, London and remained largely self-employed in that vibrant industry for the majority of his working life before heading to Ireland to live out the remainder of his days researching and writing a detailed account of Ceallachan of Caisil (the eponymous ancestor of all O'Callaghans) which he published in 2013 (see below for details). His six years of research and careful study has provided the most detailed account to date that has been published of this successful and popular Irish king. Through this book, Chris has made an invaluable contribution to the global Callaghan family legacy which will see him being remembered and living on in the minds and hearts of all those people who share his proud family name.

NB: If you are a friend or member of Chris' family and have any edits or corrections to the above please send them to us in an email. A photo of Chris, or details of when / where he was born would be especially useful.

Chris' Book (see “Quick Links” below, for free download)

Title: Book of The Callaghan: Ceallachán Caisil, King of Munster 934-954

ISBN: 978-0-9565354-2-9

Author/Publisher: A heritage book; researched, edited and self-published by Chris O'Callaghan

Book Summary: The first in-depth factual account of Ceallachán Caisil, the formidable Chief of the Eóganachta tribe and King of Munster during the period 934-954. The book details 6 years of research to reveal a successful and popular king whose legendary exploits have given him a special place in Irish history. For example, it details how, in the face of Viking invasions and O'Neill machinations, between the years of 934 and 954, he achieved all the military and political objectives required by the elders and the twenty-nine tribes of Munster.

*Current Version*: Digital Download Edition 2 (Rev 1) July 2020, 396 pages, 222 MB (see “Quick Links” below, for free download)

Previous Versions (No longer available):

Print/CD Version, Edition 1, January 2013, 365 pages

Digital Download Edition 1 July 2014, 396 pages

Digital Download, Edition 2, December 2017, 396 pages

Background Information: Chris self-published this book, selling copies directly to readers and a few Irish reference libraries. His motivation in this endeavour was not one of profit, rather it was to fulfil his ambition to make available a more detailed and accurate account of the life of Ceallachan Caisil (the father of all Callaghans), which he believed existing texts failed to do adequately. Thus, his charges for the books (printed and digital) simply covered the media and P&P costs. The original prices (in 2013) were: Printed book €30 plus P&P (no longer available); CD €5 plus P&P (no longer available), Digital Download €0 (still available, see “Quick Links” below, for free download) As a result of his death, the printed & CD version is no longer available. However, Chris’ free digital download version continues to be available (see “Quick Links” below, for free download). His original book posting can be seen in the Callaghan Sept of Arms (his now defunct Araltas website). RIP Chris, your generous work for the Callaghan Clan (in all their name variants) lives on in these pages and your excellent digital download.

Quick Links:

· Click This Free Digital Download Link: for a digital (pdf) copy of Chris O’Callaghan’s book “The Callaghan: Ceallachain Caisil, King of Munster 934-954”.

· Callaghan Sept of Arms, Chris' description from the now defunct ARALTAS.COM Irish Heraldry website.

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Date Last Updated: 1st December 2025