Cornelis Ouderogge (1599-1672) and his brother Dirk (after 1600-1649) continued the Rotterdam iron foundry of their father Jan Cornelisz. Ouderogge (1573/4-1625) after his death, producing cannons and church bells. Cornelis is known to have made at least fourteen cannons dated between 1639 and 1671, though no others of 1646 seem to have been preserved (see E. Wiersum, 'De geschut- en klokkengietersfamilie Ouderogge' in Oud-Holland, XXXI, no. 2, 1924). Some of his cannons were still in use during the 19th Century to defend the walls of the city of Rotterdam.