Driver identified as Ted Fitzgerald, 27, of St. Peters.
Man, woman airlifted to Mercy Hospital in St. Louis County.
Police says Edward Schoonover and his brother finished hunting and were returning from the woods when the accident happened.
68-year-old Edward Schoonover of rural Edwardsville died Saturday when his ATV flipped over at a creek crossing.
Thomas Arey was herding cattle when his ATV overturned.
Vehicle ran off road, hit tree
Blaze is being treated for internal injuries