Meanwhile, John had never lost sight of his plans for a renewal of the war with France. The first need of course was money. It was probably in the hope of finding some additional sources of revenue which could be claimed for the Crown that on his return from Ireland he ordered an inquiry into all assizes of novel disseisin which had been held during his absence, and also into the right of presentation to, and actual tenancy of, all ecclesiastical benefices throughout the country.[730] An inquest into the services due from the knights and other tenants-in-chief in every shire was ordered in the same year or early in the next;[731] and an inquest concerning escheated honours and the services due from them was set on foot shortly afterwards.[732] In 1211 “the king of France seized all the English ships that touched his shores, and therefore”--says the Dunstable annalist--“the king of England seized many men of the Cinque Ports”;[733] a statement which we can only suppose to mean one of two things: either that John suspected some of the ships to have been willing prizes, or that he was dissatisfied with the way in which his sailors had executed, or failed to execute, some order which he had given for retaliation. In either case, however, it is clear that he made his displeasure a ground for further exactions from the leading men of the southern coast towns. [Sidenote: 1197–1209] Of far greater moment than the desultory skirmishes between the sailors of England and France was the scheme of European coalition against Philip which John had been gradually building up during the past ten years. One of the most important elements in his political calculations throughout those years was the course of events in Germany. The death of the Emperor Henry VI. in September 1197 had been followed by a disputed election to the imperial crown, the late Emperor’s brother, Philip of Suabia, claiming it for himself against the candidate chosen by the majority of the electors, Otto of Saxony, a son of Duke Henry the Lion and Maud, daughter of Henry II. of England.[734] The Suabian prince was backed by his powerful family connexions, including the duke of Austria, son and successor of Richard Cœur-de-Lion’s old enemy Leopold. Otto’s youth had been passed in exile at the court of his Angevin grandfather, and he was a special favourite of his uncle Richard, who granted him first the earldom of York and afterwards the county of Poitou, and whose influence with some of the princes of the empire had had a share in procuring him their votes. It was, therefore, obvious policy for his rival and the king of France to make common cause against him and his kinsman of England. A treaty of alliance between the two Philips was signed on June 29, 1198.[735] In 1200 Otto sent his two brothers to demand for him from John a renewal of the investiture of York and of Poitou, and also--if we may believe Roger of Howden--two-thirds of Richard’s treasure and