Colour merchant Sebastiano Grandi was born in Italy. Details of his birth and background are not available, but he was in London by 1789 trading from no. 6 Brownlow Street, Long Acre. He was active at least until 1806, and perhaps as late as 1822. In 1806, he was awarded the Society of Art’s Silver Medal for colours and materials for painting and for a preparation of grounds on panels for painters. He claimed to have discovered how to prepare canvas, copper, or panel, in the old Venetian style of Titian, Veronese, and other Venetian masters. Further details on this merchant are lacking.