Gustavus Hamilton (1710-1746), Second Viscount Boyne, in Masquerade Costume. Artist: Rosalba Carriera (Italian, Venice 1673-1757 Venice). Dimensions: 22 1/4 x 16 7/8 in. (56.5 x 42.9 cm). Date: 1730-31. Gustavus Hamilton (1710-1746), who was Irish, s