Pronunciation: (kal'vurt),[key] —n. 1. Charles(3rd Baron Baltimore), 1637–1715, English colonial administrator in America: governor (1661–75) and proprietor (1675–89) of Maryland (grandson of George Calvert).
2. Sir George(1st Baron Baltimore), c1580–1632, British statesman: founder of the colony of Maryland.
3. his son,Leonard, 1606–47, first colonial governor of Maryland 1634–47.