Cecil had been trained as a lawyer, was associated with the Commonwealthmen, and had served as secretary to Lord Chancellor Somerset. He had proved himself an able and industrious administrator and diplomat under Elizabeth's brother and sister. Upon her accession she named him secretary of state and, in 1572, lord treasurer of England. Early in the reign he advocated foreign intervention in support of Protestant causes; but as he grew in age, experience, and responsibility, he became, like the queen herself, more prudent and cautious. From about 1570, he tended to favor diplomacy as less dangerous and more frugal than war. Consequently, he saw the need to work with, or at least avoid offending, the Catholic powers of Spain and France. His vast circle tended to attract equally cautious men interested in bureaucratic careers, like Sir Nicholas Bacon (1510-79), Elizabeth's keeper of the Great Seal; Sir Francis Knollys (1511/1512-96), vice-chamberlain, then treasurer of her household; and Thomas Radcliffe, earl of Sussex (1526/7-83), lord president of the North.