Where did the name Hooray’s come from?

For us “Hooray’s” has a double meaning – Hooray as in “Hip Hip Hurray!! it’s my birthday!!” Or “Hurray! Lets’ have ice cream” , and a little touch of Hooray (Henry) as in the Sloane Ranger handbook which is quintessentially British, slightly quirky, comical but generally all round a jolly good egg!!