The New International Encyclopædia…
“ BALTIMORE, Barons of, or Lords Baltimore. The title of the Calvert family in the Irish peerage. Sir George Calvert, first Lord (c.1580-1632) . A British statesman. He was born at Kipling, Yorkshire, and graduated at Oxford in 1597. He then became secretary to Sir Robert Cecil and won the esteem of James I., who knighted him in 1617 and made him Secretary of State in 1619. He became a Catholic in 1624 and resigned his office, but continued in favor with the King, and in 1625 was raised to the Irish peerage as Baron of Baltimore. ”
