His loyalty was about to undergo another and a severer test. In the autumn of 1688 news arrived of the projected 'invasion and usurpation,' as our Dean would always call it, of the Prince of Orange: at once he summoned his Chapter, prevailed upon them to assist the King's cause 'with their purses as well as their prayers,' and £700 were accordingly subscribed forthwith. But Lord Lumley pounced upon Durham on the 6th of December in that year, whilst the Dean was in his pulpit preaching a sermon, still preserved in the Surtees Collection, on 'Christian Resignation and Resolution, with some loyal reflexions on the Dutch Invasion'; and Dr. Grenville was, on his refusal to deliver up his arms and horses, confined within the walls of his own Deanery during the occupation of the city by the friends of King William III. Another similar sermon, however, did he, with undaunted courage, preach on the following Sunday, notwithstanding his now almost solitary position amongst his brother clergy. But James's cause was entirely lost; and our Dean had to fly from Durham to Carlisle at midnight on the 11th of December, with the help of two faithful servants. At Carlisle he learned that all was over, and made up his mind to follow his King into France, if only he could make good his escape by way of Edinburgh. On his way thither he was roughly handled by a mob, who took him for a Popish priest and Jesuit, and at eleven at night 'pulled me out of my bed, rifling my pockets and my chamber, and carrying away my horses (two geldings worth £40) and my portmantoe, and mounting me on a little jade not worth 40s.' Once more he was plundered on the road, and returned to Carlisle, where he preached on Christmas Day, when he says he hoped that he convinced the people that he was no Romanist. In the following month, however, he made another attempt--this time successfully--to reach Edinburgh; and after a long and tedious voyage, arrived at Honfleur on the 19th March--the very day after James had left Brest for Ireland, 'a great mortification and disappointment to mee,' adds Dean Grenville. Rouen was the place which he had fixed upon for his abode, and thither he removed a few days afterwards, forthwith setting about writing remonstrances to his Bishop, his brother, and his 'lapsed assistants,' his Curates; printing his sermons, to which reference has just been made, and also his 'Loyall farewell Visitation Speech,' delivered on 15th November, 1688.[38]