British architect and city planner who designed numerous London parks and buildings during the nineteenth century. His works include Battersea Park in South London and the Buckingham Palace Ballroom.
Early in his career, he trained with architects John Nash and August Pugin.
In 1836, he designed London's Christ Church, Albany Street.
His brother, John Pennethorne, also had a successful career as an architect.
He and Joseph Clarkson Maddison were fellow nineteenth-century, British-born architects.