Son of Gordon Arnold Markle (1918-1982) and Doris May Rita Sanders (1920-2011).
He filed for bankruptcy in 2016, with debts of $30,000, much less than the figure shown for his second wife when she filed for bankruptcy several years earlier, but he was said to have tax debts of over $50,000.
Brother of Mick Markle (1939) and Frederick Markle (1942).
He has German, English, Irish, Scottish, Scots-Irish/Northern Irish, and remote French, ancestry. He has Colonial American (largely English) roots going back to the 1600s, particularly in New Hampshire and Massachusetts.