 Calvert named his son " Cecilius " ( 1605 @-@ <unk> ) for Sir Robert Cecil , first Earl of Salisbury , ( 1563 @-@ 1612 ) . <unk> to Queen Elizabeth , whom Calvert had met during an extended trip to Europe between <unk> and 1603 , after which he became known as a specialist in foreign affairs . Calvert carried a <unk> for Cecilius from Paris , and so entered the service of the principal engineer on behalf of King James VI of Scotland 's succession to the English throne in 1603 , ( who then also assumed the title of King James I of England . ) 
