Rosita Fernandez, a long time San Antonian and pioneer of Tejano music, gained international fame as a recording artist and movie star. Born in Monterrey, Mexico, in 1919, Rosita was one of sixteen children and daughter of a military officer. She was educated in Laredo, Texas, and moved to San Antonio with her family when she was nine. Rosita married Raul Almaguer of San Antonio in 1938, and with him raised son Raul Javier Almaguer and daughter Diana Rosa Orellana. Devoted to her family, Rosita chose to remain in San Antonio despite her blossoming career in movies. As Rosita Fernandez's popularity grew, she became known by fans simply as Rosita.

In over sixty years of entertaining, Rosita performed Mexican ballads for foreign and U.S. dignitaries including Pope John Paul II, Prince Charles, and five U.S. presidents. Rosita performed at President Carter's inauguration, and often sang for guests of President and Lady Bird Johnson. It was Lady Bird Johnson who bestowed upon Rosita the title San Antonio's First Lady of Song in 1968 at a special performance for 40 ambassadors at the Arneson River Theatre. It was also in 1968 that Rosita was named an international ambassador for HemisFair, the world's fair held in San Antonio that year. She recorded the song for the event.

Rosita's career began in the 1920s when she started singing with her uncles in the Trio San Miguel. After moving to San Antonio as a young girl, Rosita continued to tour with her uncles in tent shows across south Texas. With the increased popularity of radio, Rosita auditioned and became the lead in a 1932 W.O.A.I. radio show. By the following year, Rosita was the voice in several radio commercial jingles. As a recording artist, Rosita made hundreds of recordings and was on the RCA, Decca, and Brunswick labels, among others. Rosita was also a pioneer in television, appearing in San Antonio's first television broadcast on W.O.A.I.-TV, and performing on a weekly basis in several subsequent television programs. Among the notable stars Rosita worked with are Xavier Cugat, Garry Moore, Dean Martin, Joan Crawford, and Ed Sullivan. Expanding into movie roles, Rosita's largest part was as the leading lady in Disney's 1963 , based on J. Frank Dobie's true story. Rosita also appeared in the 1960 John Wayne film, , and had parts in , and .

Locally, Rosita was best known and loved for her performances at the summer-long Fiesta Noche del Rio at Arneson River Theatre in San Antonio. She began at the theatre in the late 1950s, dressed in elaborate and colorful costumes, many of which she made herself. She also was a main attraction at A Night in Old San Antonio, another popular Fiesta event during April each year. Rosita officially retired in 1982 after entertaining for over sixty years. In retirement, she traveled abroad with her husband and continued to sing for charity benefits several times a year. Rosita and her husband also became spokespersons for Secure Horizons, a senior insurance health plan.

As a humanist interested in advancing art and culture, Rosita championed the cause for education. She also promoted and supported charitable causes by performing at fundraisers for the March of Dimes, Brooke Army Medical Center's Burn Unit, and local Catholic, Jewish and Protestant churches, schools, and organizations.

Rosita received numerous awards in appreciation of her dedication, talent, and loyalty to San Antonio. Among the most visible is the named in her honor, which spans the San Antonio River at the Arneson River Theatre. The bridge was dedicated to Rosita by city officials in 1982 and filmed by a Japanese television company for a special on the world's bridges. Rosita was inducted into San Antonio's Musicians Hall of Fame in 1979, was proclaimed Woman of the Year by Mayor Henry Cisneros in 1983 and was inducted into the San Antonio Women's Hall of Fame in 1984. Rosita passed away in 2006.