Rosa Maria Ruiz de Zuñiga Joss Winkleman was born on July 5th, 1934 in Tampico,Tamaulipas, Mexico, the second oldest of five children. Her brother Rodolfo, who preceded her in death and her sisters were Betty, Ileana and Marisa. She met John Joss in 1959 in Houston, Texas, and the couple married in the cathedral in Tampico on April, 23, 1960, with a much cherished Papal blessing. Their first daughter, Diana was born in February 1961 in San Rafael. After a brief period in Washington, D.C., the three returned to California, living in Palo Alto. Their second daughter, Lisa was born in 1962. They purchased a house in Los Altos that year, with daughter Alexandra joining the family in 1967.