One-Name Study for the surname Shields and all variants, including: McShields, McShiels, O' Shields, O Siadhail, O'Sheal, O'Sheald, O'Sheale, O'Sheiles, O'Sheilds, O'Sheel, O'Shales, O'Shield, O'Shields, O'Shiels, O'Shiell, O'Shiells, O'Siadhail, O'Siadhghaill, O'Siaghail, O'Siaghael, O'Siagail, Osheal, Oshealds, Osheale, Osheilds, Osheiles, Osheels, Oshiel, Oshiels, Oshal, OShields, Scales, Shales, Shals, Sheal, Sheals, Sheel, Sheeldes, Sheels, Sheil, Sheiles, Sheilles, Sheill, Sheills, Sheild, Sheilds, Sheils, Shiel, Shielde, Shieles, Shiels, Shields, Shilds, Shiell, Shiells, Shielles. The project is open to all DNA testers, male or female, who have ancestors with the Shields (or variant) surname.