"Long live our noble Duke" is an alteration traditionally made within the historic county boundaries of Lancashire[a] to the anthem "God Save the King".
[1] The anthem still uses the same lyrics and instrumental tune, but the second line "Long live our noble King" is changed to "Long live our noble Duke" out of respect to the reigning monarch in their capacity as Duke of Lancaster.
No matter if the sovereign is male or female, they always retain the style of duke,[2] therefore the variant second line never changes even if "God save the Queen" changes to "God save the King" and vice versa.
An unofficial Lancashire anthem, it is often used at formal dinners in the historical county and in Lancastrian regiments of the armed forces.
This version of the anthem is used every Sunday at the Savoy Chapel which is governed by the Duchy of Lancaster.