Mark and his wife of fifty-four years, Phyllis, live in Watertown, Wisconsin. Mark retired after thirty-nine years of ministry, including thirty-six years of teaching in Christian schools: elementa...view moreMark and his wife of fifty-four years, Phyllis, live in Watertown, Wisconsin. Mark retired after thirty-nine years of ministry, including thirty-six years of teaching in Christian schools: elementary, secondary, with twenty-six years at the college level. They have three children, with two born in Puerto Rico, and six grandchildren.view less