Martie ErwinMartie Erwin
, also known as Martie Seidel
and Martie Maguire
, (born October 12
) is a country music
songwriter, recording artist and musician, born and residing in Dallas
. She is married to Irishman Gareth Maguire. For more details see 
Martie is a founding member of the Dixie Chicks with her sister Emily Erwin. The group has been performing since 1989.
Martie plays fiddle and mandolin in the group.