During this time he won medals for flower painting in 1801, etching in 1802 and figure drawing in 1807.
[2][3] He was best known for his topographical views, and landscapes in oils and watercolours, working mostly in Dublin, and in Limerick at times.
From his address, 15 Henry Street, where Brocas lived with his father, he published the folio lithograph he produced, King John's Castle Limerick, in 1826.
A view of Trinity College and the east portico of the Bank of Ireland is another of the lithographs he produced and published in Dublin.
[1] The National Gallery of Ireland holds a number of works by him, including two watercolours depicting views of Dublin.