Margarita Contreras de Santillan, died Tuesday, July 3, 2018 at her home in Lincoln. She was born June 19, 1940 in San Luis Potosi, Mexico and immigrated to the United States in 1970. Margarita is survived by her husband Thomas Santillan Vega; children Gloria Dorval, Lupe Herrera, Teresita Kahler, Rosa Velder, Dora Herald, Dulce Santillan, Veronica Santillan-Haas, and Thomas Santillan Jr., 18 grandchildren and 6 great-grandchildren.