Castlereagh

American  

[kas-uhl-rey, kah-suhl-] / ˈkæs əlˌreɪ, ˈkɑ səl- /

noun

1. Robert Stewart, Viscount 2nd Marquess of Londonderry, 1769–1822, British statesman.

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Castlereagh ¹ British  

/ ˈkɑːsəlˌreɪ /

noun

1. a district of E Northern Ireland, in Co Down. Pop: 66 076 (2003 est). Area.: 85 sq km (33 sq miles)

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Castlereagh ² British  

/ ˈkɑːsəlˌreɪ /

noun

1. Viscount. title of Robert Stewart, Marquis of Londonderry. 1769–1822, British statesman: as foreign secretary (1812–22) led the Grand Alliance against Napoleon and attended the Congress of Vienna (1815)

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Example Sentences

Born in London in 1934 into an Anglo-Irish aristocratic family, Annabel Vane-Tempest-Stewart was the daughter of Viscount Castlereagh, who later became The 8th Marquess of Londonderry.

From BBC • Oct. 18, 2025

The Connswater River rises in the Castlereagh hills and runs northwards through east Belfast, getting wider until it reaches the sea at Belfast Lough.

From BBC • May 16, 2025

Her body was discovered in a garage on the Castlereagh Road in Belfast.

From BBC • Oct. 16, 2024

The breaches included a failure to properly declare interests while on Lisburn and Castlereagh City Council's planning committee.

From BBC • Feb. 15, 2024

Lord Castlereagh had kept him au courant during his absence of what passed in Dublin.

From My Lords of Strogue Vol. III, (of III) A Chronicle of Ireland, from the Convention to the Union by Wingfield, Lewis