Wood was born in rural Munfordville , Kentucky , the son of George Twyman Wood , an army officer .
Elizabeth Helm ( through Wood 's mother , Wood was a cousin of Confederate general Benjamin H. Helm ) .
Wood was born in rural Munfordville , Kentucky , the son of George Twyman Wood , an army officer , and Elizabeth Helm ( through his mother , he was a cousin of Confederate general Benjamin H. Helm ) .