Jake's father was born in Denmark, to a Danish father and an English mother (Jake's paternal grandfather was born under the surname "Anderson", later changing it to "Arkner", while Jake's father used his own mother's maiden surname, "Weber"). Jake's maternal grandfather, Robert Coriat, who was born in Mogador, Morocco, was of Moroccan Jewish descent. Jake's maternal grandmother, Priscilla Weigall, was English, from an upper-class family. Priscilla's father was Sir William Ernest George Archibald Weigall, 1st Baronet, while Priscilla's maternal grandfather was Sir John Blundell Maple, 1st Baronet.