Lords Baltimore

Barony of Baltimore
Creation date	1625
Monarch	James I
Peerage	Peerage of Ireland
First holder	George Calvert, 1st Baron Baltimore
Present holder	Extinct
Remainder to	the male heirs of the body lawfully begotten
Extinction date	4 September 1771

Baron Baltimore, of Baltimore Manor in County Longford, was a title in the Peerage of Ireland created in 1624 and ended in 1771 on the death of its sixth-generation male heir, aged 39.

The title was created in 1624 for George Calvert and became extinct on the death of the sixth Baron (Frederick Calvert) in 1771. The title was held by six members/generations of the Calvert family who were proprietors of the palatinates Avalon in Newfoundland and the colonial proprietary Province of Maryland (later the American free State of Maryland). A reference to Lord Baltimore is to any one of the six barons and most frequently in US History to Cecil Calvert, 2nd Baron Baltimore after whom the city of Baltimore, Maryland was named, which took place in his lifetime due to his family's holdings; his father had supported colonization of the state and his younger brother Leonard Calvert was the first Governor of Maryland.

As members of the Irish peerage the Lords Baltimore sat if they so wished in the medieval-founded, 1801-abolished Irish House of Lords. Irish peerages were awarded to existing major landowners content to support the English, Scottish or British forces, those involved in the various economic, social and military campaigns in Ireland such as the Plantations of Ireland, and as a way of creating peerages which did not grant a seat in the British House of Lords and so allowed the grantee to sit in the House of Commons in London, as such, Irish peers ranged between owning virtually no property in Ireland their to having their main home and considerable property in Ireland.

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