Lord Baltimore

Baltimore, Lord, collective title of 6 members of the Calvert family, founders of the colony of Maryland. George Calvert (1580?–1632) was granted the proprietorship of what became Maryland by Charles I of England in 1632, but died before the charter was signed. The charter rights passed to George's son Celilius Calvert (1605?–75), who founded the colony of Maryland in 1632. In 1691, Maryland became a royal colony, but in 1715 the Crown returned the charter to the Calverts.