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About Jason 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. However, based on the ultimate authority of Dubhaltach Mac Fhirbhisigh they are out of Ui Dhuinn (O’Dunn), and, therefore, an Uí Failghi tribe, not Osraige. While it is clearly apparent John O’Hart's given pedigree is erroneous, it is suggested Ó Cléirigh probably became confused while transcribing from Mac Fhirbhisigh. This view is echoed by modern scholar Bart Jaski.

The Irish surname Ó Braonáin, means "descendant of Braonán". The personal name Braonán is derived from a word which means "moisture", "drop". The Irish surname Ó Branáin, means "descendant of Branán". The personal name Branán means "little raven". Brennan is also a given name.

Notable people with the surname include:

Jason Brennan writes about Voting, Success, Moral and ethical aspects, General, Economics, and Commerce. Their best-known work is Why It's Ok to Want to Be Rich.

On FindMyTBR we track 7 books by Jason Brennan, 7 of them confirmed as audiobooks on Spotify or Apple Books — including Against Democracy, Business Ethics for Better Behavior, and Democracy : A Guided Tour. Full availability across Spotify, Apple Books, Audible, and Amazon is below.