Rex Brennan

Name meaning, origin and global statistics

Rex Brennan — Latin
56K People worldwide
United States Most common in
1970s Peak popularity
Gender
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Rex Brennan is a name that combines Latin origins. The first name Rex is a masculine given name of Latin origin. Rex is a male given name, short for Rexford or Reginald, derived from the Latin word rex, meaning "king". This is the etymological root word for king in several languages. Given name Rex (artist) (birth name not made public; c.1943–2024), American gay erotic artist Rex Andrew Alarcon (born 1970), Filipino prelate of the Roman Catholic church Rex Alexander (1924–1982), American basketball and tennis coach Rex Allen (1920–1999), American actor and singer Rex Allen, Jr. The surname Brennan: Brennan () is an Irish surname which is an anglicised form of two different Irish-language surnames: Ó Braonáin and Ó Branáin (or Mac Branáin). Historically, one source of the surname was the prominent clan Ua Braonáin (O'Brennan) of Uí Duach (Idough) in Osraige who were a junior Dál Birn sept stemming from a younger son of Cerball mac Dúnlainge (d. 888). Recent surname evaluations highlighted the geographic consistency of this lineage in the barony of Idough. Rex is a distinctive first name, carried by approximately 56K people globally, with the highest concentration in United States. The name Rex reached peak popularity in the 1970s, reflecting the naming trends of that era.

Etymology & Origin

First Name: Rex

Latin

Rex is a male given name, short for Rexford or Reginald, derived from the Latin word rex, meaning "king". This is the etymological root word for king in several languages. Given name Rex (artist) (birth name not made public; c.1943–2024), American gay erotic artist Rex Andrew Alarcon (born 1970), Filipino prelate of the Roman Catholic church Rex Alexander (1924–1982), American basketball and tennis coach Rex Allen (1920–1999), American actor and singer Rex Allen, Jr.

Surname: Brennan

Irish

Brennan () is an Irish surname which is an anglicised form of two different Irish-language surnames: Ó Braonáin and Ó Branáin (or Mac Branáin). Historically, one source of the surname was the prominent clan Ua Braonáin (O'Brennan) of Uí Duach (Idough) in Osraige who were a junior Dál Birn sept stemming from a younger son of Cerball mac Dúnlainge (d. 888). Recent surname evaluations highlighted the geographic consistency of this lineage in the barony of Idough.

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Geographic Distribution

The first name Rex is distributed across the globe, with the highest concentrations in the following countries:

United States 51%
United Kingdom 27%
Australia 12%
Canada 10%

Popularity Over Time

Popularity of the name Rex by decade, based on birth registration data:

1900s
1910s
1920s
1930s
1940s
1950s
1960s
1970s
1980s
1990s
2000s
2010s
2020s
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Numerology

According to Pythagorean numerology, each letter in a name carries a numerical value. Here are the key numbers for Rex Brennan:

7
Expression Number

Wisdom and introspection. A deep, analytical mind drawn to philosophy, spirituality and the search for truth.

11
Soul Urge Number

Intuition and inspiration (Master Number 11). Amplifies spiritual awareness, creative vision and sensitivity.

5
Personality Number

Freedom and adaptability. A dynamic, versatile personality that embraces change and seeks new experiences.

Numerology is a cultural tradition for exploring symbolism in names. Results are for entertainment purposes.

Frequently Asked Questions

What is the origin of the first name Rex?
The first name Rex originates from Latin. Rex is a male given name, short for Rexford or Reginald, derived from the Latin word rex, meaning "king". This is the etymological root word for king in several languages. Given name Rex (artist) (birth name not made public; c.1943–2024), American gay erotic artist Rex Andrew Alarcon (born 1970), Filipino prelate of the Roman Catholic church Rex Alexander (1924–1982), American basketball and tennis coach Rex Allen (1920–1999), American actor and singer Rex Allen, Jr.
When was Rex most popular?
The name Rex reached its peak popularity during the 1970s.
What is the origin of the surname Brennan?
The surname Brennan originates from Irish. Brennan () is an Irish surname which is an anglicised form of two different Irish-language surnames: Ó Braonáin and Ó Branáin (or Mac Branáin). Historically, one source of the surname was the prominent clan Ua Braonáin (O'Brennan) of Uí Duach (Idough) in Osraige who were a junior Dál Birn sept stemming from a younger son of Cerball mac Dúnlainge (d. 888). Recent surname evaluations highlighted the geographic consistency of this lineage in the barony of Idough.
What are the origins of the name Rex Brennan?
The name Rex Brennan combines two different traditions: the first name Rex has Latin roots, while the surname Brennan originates from Irish.
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