 In 1598 Fowler agreed to send intelligence from the royal court to England, and was to be known by the cipher 'Ib' in correspondence.However, nothing from him or mentioning 'Ib' survives, except perhaps a newsletter of March 1602 that reached Sir Robert Cecil and appears to be in his handwriting.In England in September 1603, he met Arbella Stuart at Woodstock Palace, and sent her two sonnets, one addressed to her, and another, "Upon an Horologe of the Clock at Loseley" which contains a partial anagram of her name.