Emily Robison, a member of Dixie Chicks and Court Yard Hounds, and boyfriend Martin Strayer welcomed the arrival of a daughter on Tuesday (Sept. 4), People magazine reports. Violet Isabel Strayer weighed 8 pounds, 8 ounces. Strayer played guitar and keyboards on the Court Yard Hounds' self-titled album released in 2010. The Court Yard Hounds also feature Martie Maguire, Robison's sister and bandmate in the Dixie Chicks. Robison has three other children -- twins Juliana Tex and Henry Benjamin, 7, and son Charles Augustus, 9 -- from her marriage to singer-songwriter Charlie Robison. They divorced in 2008.