Delia Razon, a talented actress, was born on August 8, 1931, in Iloilo City, to Karyl Grytz, a German-American, and May Duling. She married Aurelio Reyes, with whom she had three children: Carl Glenn (Jojo),Aurea (Rhea),and Maria Aurelia.
Rhea, their daughter, also pursued a career in acting and married actor Rey 'PJ' Abellana. Their offspring, Carla Abellana, is a rising television star. Delia Razon's early life was marked by her passion for acting, which led her to drop out of Colegio de Santo Angel in Iloilo City to pursue her dream.
During a visit to Sampaguita Pictures, she caught the attention of the studio's personnel and was given a screen test, which she passed. She started her acting career as an "extra" in Awit ng bulag (1948) and several other films. She was then asked to appear in LVN Pictures' Malaya (Mutya sa gubat) (1948),starring Mila Del Sol and Teddy Benavidez.
Producer Doña Sisang, a.k.a. Narcisa de Leon, was impressed with her performance and gave her a three-picture contract. Razon made her debut in 'Krus na Bituin' (1948),starring Lilia Dizon. She played second lead in Florante at Laura (1949),starring Teody Belarmino, Gil de Leon, and Leopoldo Salcedo.
She then became the leading lady to Rogelio de la Rosa in Prinsipe Amante (1950) and its sequel Prinsipe Amante sa Rubitanya (1951).