T
he name most likely comes directly from the Welsh word for a “toy; trinket.” Its Welsh pronunciation should be (TEG-en), which rhymes with Megan, but it has been popularly pronounced and known as (TEE-gen) in most of the Anglophone world.
The name has also been linked with the Cornish word teg (beautiful).
Its use as a male name is due to its confusion with the Irish surname Teagan (son of Tadhg), but Tegan has always traditionally been a feminine name.
The name first came into use in the 19th-century.
The name is most popularly associated with the Canadian folk duo, Tegan & Sara.
Tegan has been in the U.S. Top 1000 since 2010. It is currently the 906th most popular female name in the United States.
In England/Wales, it was in the top 500 between 2002 and 2012 and peaked at #259 in 2006.
Sources