Personalized Irish Ancestors Heritage Youth Long Sleeve T-Shirt. Irish Heritage Youth Long Sleeve T-Shirt - White green, orange and white colors of Ireland design says I love my Irish Ancestors. Great for a genealogist or anyone with Irish pride. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)