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founders of those states Maryland I'm not so sure but Pennsylvania was founded by William Penn.
William Penn (Pennsylvania) and Lord Calvert (Maryland)
I think it's William Calvert.
William Penn and Sir George Calvert were two of the founders of American colonies that would later become states. William Penn founded Pennsylvania. Sir George Calvert founded the colony of Maryland, but granting of the charter was not completed until five weeks after his death.
proprietors
William Samuel Calvert died on 1930-02-22.
William Samuel Calvert was born on 1859-03-03.
William Calvert has written: 'Pneuma; or, The wandering soul, a parable in rhyme'
Leonard Calvert, Philip Calvert, Charles Calvert, Father Andrew White, Father Thomas Copley, Captain Cornwaleys, Governor Notley, Governor Hart, Colonel Jowles, Richard Ingle, Chief Tayac, William Claiborne, John Coode, Charles Carroll, Bishop John Carroll,
William Calvert Kneale has written: 'The responsibility of criminals' -- subject(s): Forensic psychiatry, Criminal liability
William M. Robinson has written: 'Maryland-Pennsylvania countryside canoe trails' -- subject(s): Canoes and canoeing, Guidebooks
William Jephtha Calvert has written: 'Prevention of contagious diseases in school children' -- subject(s): Communicable diseases, Prevention, School hygiene