Researching Thomas Brennan
Investigate the background of Thomas Brennan using the links below. We hope you find this information useful!
![]() | Did you know that in the 1881 UK census there were 3128 people with the Brennan surname? In that year Brennan was ranked number 1307 for popularity in the UK. |

The name Thomas means "a twin" and is of Hebrew origin.
Records of Thomas Brennan on Ancestry
Ancestry is a major source of information if you are filling out the detail of Thomas Brennan in your family tree. A vast range of data is available to search ranging from census records, births, deaths and marriages, military records and immigration records to name but a few. Free trials are normally available and are a good way to fill out a lot of your tree quickly.
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Ancestry.com Global records search results for Thomas Brennan. |
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Ancestry.com US records search results for Thomas Brennan. |
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Ancestry.com.au Australian records search results for Thomas Brennan. |
DNA
Sometimes you can run into a brick wall in your tree and you just don't have enough evidence to make that next step back in time. A DNA test can sometimes help to make a link to a particular family name if you find you share common DNA with people who have the same or similar surnames as each other. If you are lucky then you may get a match within a few generations and discover some Brennan ancestors. Additionally, the modern DNA test can give you a breakdown of your ethnic mix - you may be surprised at the results!
Have you reached a brick wall in your Brennan Tree?
Birth, Death and Marriage Records for Thomas Brennan and the Brennan Genealogy
Birth, Death and Marriage records are often the best method of making the links to the Brennan Genealogy that will form part of your family tree. Although records vary from country to country, they are normally the most formal record of a person's relations. From the sources below you will be able to find a birth record and, from that, a birth certificate can be ordered which lists the names of the mother and father, taking you back another generation in your tree. A marriage certificate may also list the names of the respective fathers of the bride and groom which may then help you to find them earlier in life on a census record enabling you to fill out more detail in the Brennan family tree.
Investigate Parish Records for Thomas Brennan at Find My Past.
Search for the UK registered births, marriages and deaths of Thomas Brennan using the FreeBMD database.
Explore Genealogy Bank for Thomas Brennan records.
Explore MyHeritage for Thomas Brennan information.
Study the LDS Database for records about Thomas Brennan.
Research the Brennan surname using fold3 Military Archives and view images of original Brennan Military records.
![]() | Did you know that there are currently 15516 people with the Brennan surname in the UK? Brennan is now ranked number 359 for popularity in the UK. |
Brennan Family History Databases
Another way to build your tree quickly is to use the research other people have already done. This can help to confirm or refute your own deductions - however, be wary of taking this data at face value as other researchers may not have been as meticulous as you. Always try to back up deductions with some definitive sources rather than relying too heavily on others.
Investigate the WikiTree database for user contributed records for Thomas Brennan.
Study MyTrees for information on the Brennan family and people looking to contact living Brennan relations.
Check out One Great Family for Brennan records submitted by people who are already researching the Brennan Family Tree.
Find Thomas Brennan from Ireland on findmypast.ie
Brennan Forums
There are a number of forums which are dedicated to rearching particular surnames. These can be good places to share your findings and also to tap into the knowledge that others may already have. These can sometimes be a good way of finding living relations as these tend not to show up on the other sources of information for privacy reasons.
Research the Brennan surname using Genealogy.com forums .
![]() | Did you know that there are currently 48612 people with the Brennan surname in the USA? Brennan is ranked number 141 for popularity in the USA. |
Miscellaneous Brennan Databases
Check out the Ellis Island Database for information on Thomas Brennan. This database contains over 25 million immigration records detailing passengers arriving in the United States of America.
Some Famous People called Thomas Brennan
Thomas Francis Brennan
Thomas Francis Brennan (6 October 1855 – 20 March 1916) was an American Catholic bishop who served as the first Catholic bishop of Dallas from 1891 to 1893.
Brennan was born at Tipperary, Ireland, and ordained to the priesthood at Brixen-Tyrol on July 4, 1880. He was consecrated Bishop of Dallas at Erie, Pennsylvania, on April 5, 1891, by Bishop Tobias Mullen. Two years later, on February 1, 1893, he was transferred to the titular see of Utilla, and was made Auxiliary to Bishop Thomas Joseph Power of St. John's, Newfoundland. He was called to Rome in December 1904, and was given the titular see of Cesarea on October 7, 1905. The last years of his life were spent in the Basilian monastery at Grottaferrata, near Rome, where he died at age 60.
Source: Thomas Francis Brennan, Wikipedia, The Free EncyclopediaThomas Brennan (Victorian state politician)
Thomas William Brennan (7 April 1900 – 29 October 1966) was an Australian politician.
Born in Surrey Hills to labourer Patrick William Brennan and Kate Kealy, he attended school in Carlton and at St Joseph's CBC North Melbourne in 1915. Brennan became a Second Lieutenant in his schools Cadet Company and obtained his Leaving Certificate while there in 1919. After leaving school he moved on to the University of Melbourne where he studied law on a part-time basis.
He became a political journalist, having joined the Labor Party (ALP) around 1925 and was the editor of The Tribune, a weekly Catholic newspaper, for two years. He was admitted as a solicitor in 1935, and led classes in English and Public Speaking at the Victorian Labor College from 1941 to 1956.
From 1945 to 1955 he was on the state executive of the ALP, serving as president from 1950 to 1951 and as a Victorian MLC for Monash Province from 1952, but in 1955 he was part of the split that formed the Australian Labor Party (Anti-Communist), which became the Democratic Labor Party (DLP). He lost his State seat in 1958 and continued to contest elections for the DLP until his death.
Source: Thomas Brennan (Victorian state politician), Wikipedia, The Free EncyclopediaThomas Brennan (equestrian)
Thomas "Tommy" Brennan (29 January 1940 – 20 July 2014) was an Irish equestrian who was successful both in jumping and eventing. He competed at the 1964 and 1968 Olympics in the mixed three-day event, individually and with the Irish team, with the best result of fourth place in the team competition in 1964. He was part of the Irish team that won the gold medal at the 1966 Eventing World Championship. Between 1964 and 1966 Brennan rode Kilkenny, who was later sold to James C. Wofford and won two silver Olympic medals. Brennan also worked with Ambassador, who was sold to Graziano Mancinelli and won an Olympic gold.
During his career Brennan won nine national titles and 67 international jumping competitions. In retirement he helped design cross-country eventing courses, in particularly the course at Punchestown, Ireland, which was used for the 1991 and 2003 European Championships. He also headed the Irish junior (1981–1985) and senior (2007) teams. In 1985 Brennan was awarded the FEI Gold Badge of Honour, and in 1997 inducted into the Irish Sports Council Hall of Fame
Brennan was born in Kilkenny, Ireland, and raised on the family farm in Dunnamaggin, where he trained in horse riding and animal husbandry. He then moved to Dublin to improve his riding skills and study agriculture. Brennan had a sister Kathleen O’Neill and brother Peter.
Source: Thomas Brennan (equestrian), Wikipedia, The Free EncyclopediaOther names that sound a bit like Brennan
Family names can get corrupted over time, particularly where literacy was not as good. The following list contains some names that have similar sounds so you may want to also look at one or two of the more likely possibilites.
Baerman Barmaimon Barman Barnam Barnham Barning Barningham Barnum Bauermann Bearman Beermann Behrman Behrmann Berman Bermingham Bernham Bernin Bernine Berninger Bernini Bernon Bernondos Berriman Berryman Berumen Bierman Biermann Birmingham Birnum Boarman Boorman Boreman Borman Bornamann Borneman Bornheimer Bornman Borrowman Bowerman Braiman Brainen Braman Bramham Bramont Branam Branaman Branen Branham Branin Brannam Brannan Branneman Brannen Brannin Branning Branninger Brannon Brannum Branom Branum Branyan Branyon Brauman Brauninger Brayman Braynion Breeman Bremen Breming Bremond Breneman Brenenstahl Brennand Brennans Brenneman Brennen Brennenstuhl Brenning Brennon Brienen Brimham Brimingham Brimman Brimming Bringham Brining Brininstool Brinning Broennimann Bromaghim Broman Bromham Bromont Bromund Bronnenkant Broughman Brownen Browning Bruening Bruineman Bruinemann Brumaghim Bruman Brumana Brumen Brumham Brummund Bruneon Bruning Brunini Brunnemer Brunnen Brunnenkant Brunning Brunon Brunone Brymham Bryning Brynnink Buerman Buermann Buhrman Buranen Burman Burmann Burmingham Burnaine Burnam Burnand Burneman Burnham Burnhams Burning Burningham Burnman Burnum





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