John Cawse's portrait was the last painted of Weber, dating from between 15th March 1826 and his death on 5th June. Weber spent the duration of his stay in London at the house of Sir George Smart, a great friend and the pre-eminent British conductor of the time, whom Cawse also painted. During these months Weber was immersed in completing his last opera Oberon, which was premiered on the 12th April at Covent Garden under the composer's baton. Though it is believed that this portrait was painted whilst Weber was still alive, Cawse also sketched him on his death bed, and was present when the plaster mould was taken for the composer's death-mask, a copy of which is in the Royal College of Music collection.
closely related to Smart, George