My father is 93 years old. My father remarried after my mother's death. He and new wife were married 10 years. His then wife died 3 years ago. She was 88. Her social security was more than my father's. Is my father entitled to survivor's benefit from her social security pension? If the wife was receiving survivor's benefit herself (from her deceased husband)at the time of her death, is there any compensation to my father?