Josceline Percy British Royal Navy admiral (1784-1856) (1784–1856) Parents Isabella Percy, Countess of Beverley Algernon Percy, 1st Earl of Beverley Children Sophia Louisa Percy Alan Percy Emily Percy Charlotte Alice Percy Siblings George Percy, 5th Duke of Northumberland Charlotte Ashburnham, Countess of Ashburnham Henry Percy Hugh Percy William Henry Percy Algernon Percy Lord Charles Greatheed Bertie Percy Francis Percy Lady Emily Percy Lady Louisa Percy Elizabeth Percy Partners Sophia Elizabeth Walhouse