O’Callaghan of Munster Clan Society

An affiliated society of The Council of Irish Clans

Who are we?

We are an online society for people who, somewhere in their ancestry, share the surname O’Callaghan, or one of the numerous modern variants such as Callaghan, O'Callahan, Callahan, O'Kallaghan, Kallaghan, Kallahan, Kalahan, Keelaghan, Kealahan & Keelan etc and who can trace their Callaghan lineage back to Munster in Ireland (ie counties Clare, Cork, Kerry, Limerick, Tipperary & Waterford). These surnames are all derived from Cellachán Cashel, the formidable Chief of the Eóganachta tribe and King of Munster from AD 935 until 954 who, amongst many other famed accomplishments, is said to have subdued the Vikings and defeated the father of Brian Boru of the Dal gCais, in battle.

DNA testing reveals we are more than one bloodline, but history tells us that we were once bound together as part of a historic fraternity, the O’Callaghan of Munster Clan.

We understand that Clans can invoke many feelings in Irish descendants from, at one extreme, providing a sense ancestral connection and a sensation of immense pride in their heritage to, at the opposite extreme, a sense that clans are stuck in the past with archaic processes that are out of touch with the modern world. As always, there is some truth in both perspectives, the world has moved on but, at the same time, we can also be proud of our ancestors and the past. In forming this clan society, our hope is that, with some thought, and your help, it will be possible to create a society, which brings genuine benefits to a modern-day members of the Callaghan clan.

Before proceeding to discuss how we might achieve that, it is important to understand that what is being proposed is the creation of a clan society, which is distinct from the clan itself. The reasoning being that, clan membership is something that most Irish people are born into (ie by virtue of a person’s Irish family heritage, they are a ‘de facto’ member of a given clan). For example, if you carry one of the variations of the Callaghan surname, and your ancestry was rooted in Munster, then it is likely you are, by birthright, a member of the O’Callaghan of Munster Clan, whether or not engaging with your clan is part of your current life.

In contrast, this clan society is something you can chose to join, or not. So, with that explanation behind us, why would you become involved with this clan society? That is something which will be discussed in the following paragraph.

What are the Society’s Goals?

Our aim is to create an online clan society that is run by the members, for the members, who provide mutual support (ie helping each other where we can). Once the society has established itself, it is hoped that organisational roles can be rotated annually (to share the load) and, where there is more than one person putting themselves forward for a role, the decision would be made by members votes.

As was discussed in the previous paragraph, the challenge facing us is to set up a modern clan society which delivers benefits to its members (ie you, the reader). Thus, at this initial phase, which runs until the end of 2026, we are in a listening mode, soliciting your suggestions for how we might form a society that works for you.

First, we need to decide on the society’s goals. To help with that, we now describe some possible goals, which you can endorse, build upon or suggest entirely new goals.

· Foster and facilitate a clan spirit, diversity, friendship and networking amongst clan members.

· Facilitate the preservation of the history, folklore, and traditions of our clan.

· Help each other to understand our family roots and connections.

· Provide mutual support for member projects which, for example, might aim to provide fresh insights to the ever-changing structure and composition of our clan.

· Enable members to organise international and regional gatherings (or forums), either online or in-person, with the purpose of allowing members to network with each other.

Managing the Society?

As mentioned in the preceding section, we are aiming for the society to be run by members, for members. Ideally, we want to minimise the need for management roles. While the vast majority of members would simply be enjoy the society’s benefits, for this society to function, some members would need to be part of volunteer teams that facilitate aspects of the society. The intention is to create a small team of people to cover each task, so as to minimise the load on any one individual. As with the goals of the society (above), we now invite your suggestions for the type of roles we should have, and how they might be organised. As before, we will describe some possible options, as an aid to help you think. You can either endorse these ideas or come up with your own.

· Writing Team (members who might write occasional short articles about Callaghan history, genealogy or family research for online webpages or a newsletter)

· Media Team (members who help the society with publicity, social media postings etc)

· Website Team (being part of the team that maintains and expands the society’s webpages, as the society grows)

· Admin Team (first point of contact for potential and existing members etc)

· Advisory Team (members who might be willing to share their experiences of genealogy research to help other members)

· Executive Team (akin to "Ceann Fine" & "tánaiste" - being the public figurehead and senior executive overseeing operations)

As discussed previously, we imagine these teams would not be permanent fixtures, and would function as fairly fluid units, with people contributing as and when commitments in their lives allow (ie as they juggle jobs, family and other commitments). At this early stage, we are also open to suggestions as to how to better manage any aspect of the clan society.

Is There a Membership Fee?

The society will be is run by volunteers (its members) for its members; thus, we don’t envisage charging any membership fee.

What Are the Next Steps?

If you have any opinions on the above, and are willing to share them with us please email us at “O'CallaghanOfMunsterClan” (click to open an email client)

Alternatively, if are interested in joining this society either as a regular member, or as part of one of the volunteer teams, or if you have any helpful suggestions, please contact us by emailing “O'CallaghanOfMunsterClan” (click to open an email client).

Currently, the society is in the very early stages of being set up. Thus, before we proceed to invest significant time into this, we need to assess the demand for an O’Callaghan of Munster Clan Society. As a consequence, simply registering your support or interest in becoming a member is very helpful to us, since it allows us to assess the demand that exists for establishing this society. We plan to leave this call open for the remainder of 2026 and, depending on the response, decide whether to move forward with establishing an O’Callaghan of Munster Clan Society.

Am I Eligible for Membership?

If you share our goals, and your ancestors bore the surname Callaghan (or any variant) either now or sometime in the past¹, plus those family members originated from Munster in Ireland, then this is the Clan society for you. To express your support, or interest in joining our clan society, please email us at “O'CallaghanOfMunsterClan” (click to open an email client).

Note 1: For example, the way inherited names work, the female line of Callaghans lose their Callaghan surname but clearly, they remain genetically part of the clan as much as any male and thus, would be very much welcomed into this society.

The Web Site

In this new world, adjacency is no longer just a matter of geographic connection but rather is one of technological connection. Thus, we are proposing that the hub of our communications would be a web site to facilitate connections between clan members (what you are looking at now is a prototype that would be further developed in line with your feedback and suggestions).

Further Information about the O’Callaghan of Munster Clan:

· Joseph F.O Callaghan, "Clan Callaghan: The O Callaghan Family of County Cork", 302 pages, publisher Genealogical.Com, Inc, published 23 Nov 2020 (revised edition), ISBN: 9780806359168, 2020 (revised)

· Chris O'Callaghan “Book of The Callaghan“, 396 pages, Co. Cork, Ireland, 2013, 2014, 2017 & 2020, ISBN: 978-0-9565354-2-9 (provides an in-depth factual account of Ceallachán Caisil). Click on Chris O'Callaghan to get a free download version of his book.

· Callaghan Info Webpage, discusses the history of the Munster based Callaghan clan (inclusive of all variations of the surname), explains and illustrates its Coat of Arms, together with providing numerous links to a multitude of interesting ‘Callaghan’ related information.

· Wikipedia O’Callaghan Website, Provides general information on all O’Callaghan clans, together with a list of notable Callaghans.

Finally, we hope you can join us on this journey, for what will surely be an interesting new adventure for our clan,

Professor Joseph O'Callaghan

Professor Joan O’Callaghan-Castella

Professor Victor Callaghan

Contact: O'CallaghanOfMunsterClan (click to open email client)

Our thanks to Dr Mike Fitzpatrick and Proinsias Mag Fhionnghaile, of the Council of Irish Clans, for their valuable guidance in creating this web page.