Cecil Calvert , Second Baron Baltimore ( 8 August 1605 - 30 November 1675 ) , was an English peer who was the first Proprietor and Proprietary Governor of the Province of Maryland , and ninth Proprietary Governor of the Colony of Newfoundland and the colony of Avalon ( in the southeast ) .
Cecilius Calvert , 2nd Baron Baltimore ( August 8 , 1605 - November 30 , 1675 ) , was a member of the English nobility who started the colony of Maryland in the British colonies .