Catholic Thesis – Weld, Edward Deo Optimo Conclusiones Physicae 1761 Broadside – with fine woodcut, folded with minor split to fold, Thesis of student Edward Weld, Catholic landowner of Lulworth Castle, Dorset. His wife after his death became the long time companion of the Prince of Wales with whom she secretly concocted a marriage. Weld was killed after a fall from a horse.