Please help us...

My Grandfather (whom I never met) was William Robert Edmonds Sr, born in the early 1900's. We believe he had a brother and a sister. He was married for a short time to Loraine. They had only one child, whom they named William Robert Edmonds Jr. My grandfather survived the Death March of Battan, and last known residence was San Bernadino. He was killed in a robbery shortly after returning from the war. He died before I could meet him. My dad, (the second William) never told me about my grandfather, and never told me who my relatives were. If anyone has any information on what family tree I belong to, I would be very grateful.Thankyou, Colleen Edmonds