License, on the petition of their Foundress, Mary de Sancto Paulo, Countess of Pembroke, to have a Chapel founded and built by the said Countess within their walls, wherein Masses and other Divine Offices may be celebrated by Priests of the said College; saving the rights of the Parish Church." The Parochial rights here spoken of mean the exclusive right of the Parish Priest to celebrate marriages and to receive the dues known as "Easter Offerings "and "Surplice Fees." The dedication of St. Botolph's Church notifies us that we are now entering Cambridge proper. For this Saint, who was historically an abbot, the pioneer of the Benedictine Order in East Anglia, became adopted by travellers as their special patron; and his churches were, accordingly, placed for the most part at the gates of towns that his benediction might speed the parting voyager. We thus find them at no fewer than four of the London exits, Aldgate, Aldersgate, Bishopsgate, and Billingsgate, and in more than sixty other places, mostly in East Anglia. That which we are now considering was associated with the entrance to Cambridge known as "Trumpington Gate," where the mediaeval traveller from London made his way into the town by crossing the ancient defensive work called "The King's Ditch." The construction of this great trench was popularly ascribed to King Henry the Third, who, in his struggle with the Barons, desired to keep a firm hold on the important strategic centre of Cambridge. There is some reason, however, to suppose that he did not actually initiate the idea of thus insulating the town by running a ditch across the bend of the river on which it stands, but merely deepened and widened an earlier trench, originally made, perhaps, by the Danes during their occupation of the place, and remade by King John. However this may be, the ditch utterly failed of its purpose. Not only was it unequal to keeping the Barons out, but it could not even preserve the town from being pillaged by a local marauder, Geoffry de Magnaville or Maundeville, who made his lair in the neighbouring fens. The King's Ditch left the river at "the King's Mill" (now Newnham Mill), and re-entered it opposite Magdalene College. It remained an open watercourse (and a common sewer) till near the beginning of the nineteenth century, when it was filled in, none too soon, for sanitary reasons. Timber bridges spanned the stream at "Barnwell Gate," where the "Via Devana" entered the town, as well as here at "Trumpington Gate." These gates themselves, if they ever had any material existence, were probably, at the most, little more than toll-bars.