Hugh Owen was a Welshman, born at Plas Du in Caernarvonshire in 1538, who refused to forego his Catholic religious allegiance in the reign of Elizabeth I. Secretary to Henry, twelfth and last of the Fitzalan Earls of Arundel, he fled abroad at the time of the Ridolfi Plot in 1571. Although only on the fringe of it, he, no doubt, considered himself, with reason, to be in danger of implication. Certainly he appears to have been involved, about this time, in a project to secure the release of Mary, Queen of Scots, which would have made it extremely perilous for him to stay in England. By the 1580s he enjoyed the full confidence of the Duke of Parma, governor of the Spanish Netherlands, as the organiser of an intelligence network which enabled him to counteract in large measure the very effective system of espionage established by Sir Francis Walsingham. Parma passed him on to Archduke Albert, who described him as ‘diligent, very discreet and suitable for any business’.