Youell Wayne Widner

Hello I am searching to see if I have any other siblings.My father's name is Youell Wayne Widner. He died on October 28th 1975. I was hoping to discover if he had any other children besides me. He lived in Tornado WV for most of his life. He was born July 30 1948. His nickname was Dunky. He was in the Vietnam war in the early 1970's. Please let me know if you have any information on him or anyone else that knew him. Thank-you