In the fall of 1999, Angelica Barrera felt a need for a new Latina Sorority at Northern Illinois University. Feeling like she should not settle for less than what she was looking for, she decided to see if other women felt the same. Edith Roman and Olivia De La Torre had similar feelings.
Together, Angelica Barrera, Edith Roman, and Olivia De La Torre contacted a representative of Epsilon Chapter and were directed to the Membership Director of Gamma Phi Omega, Marisa "Ixtaci" Avila. They worked on a date for an informational and instantly were interested; Angelica, Edith, and Olivia began their intake process on January 16, 2000.
On June 3, 2000 a new era began as Angelica Barrera, Edith Roman, and Olivia De La Torre became Noble Founders of Gamma Phi Omega at NIU. On October 8, 2000 the university recognized Gamma Phi Omega as an official sorority on campus.
On September 1, 2001 of the the following year, Northern Illinois University became the official Theta Chapter of Gamma Phi Omega. The sorority continues to implement the values established by Theta's Noble Founders, allowing the chapter to grow.