Proceeding still further west, we come to the Westbourne, which, like the other brooks, rose in the northern heights above London. Around Jack Straw’s Castle at Hampstead various rills sprang from the ground, which, forming a united stream a little north of the Finchley Road, that stream, flowing west towards the spot known as West End, continued its western course till it reached Maygrove Road; it crossed that road, and taking a sudden turn south, it ran through Kilburn down to Belsize Road, south of which a small lake was formed, by its confluence there with a considerable tributary in the form of a two-pronged fork and its handle, coming from the lower southern heights of Hampstead. From the lake the Westbourne flowed in a westerly course, and near Cambridge Road received another affluent from the high ground where Paddington Cemetery now stands; still running west at Chippenham Road, its volume was further increased by the reception of a stream coming from the neighbourhood of Brondesbury, and from this point it ran due south, but with many windings, through Paddington, and across the Uxbridge Road, through part of Kensington Gardens, through the Serpentine in Hyde Park and across the Knightsbridge Road, and what was then called the Five Fields, a miserable swamp, and formed the eastern boundary of Chelsea till it discharged itself into the Thames, west of Chelsea Bridge, but divided into a considerable number of small streams. Such was its course, and from its description we see that it was no insignificant stream, and may assume that the first settlers in those northern parts of London must be looked for on its banks. Like the Fleet, it had various names in different localities; thus at Kilburn it was known as the Keele Bourne, Coldbourne, and Kilbourne; at Bayswater it was called the Bayswater Rivulet; the name of Bayswater itself is supposed to be derived from Baynard, who built Baynard Castle on the Thames, and also possessed lands at Bayswater. At the end of the fourteenth century it was called Baynard’s Watering-place, which in time was shortened to its present appellation. The bridge which gave Knightsbridge its name was a stone bridge; by whom or when erected is not on record, but probably Edward the Confessor, who conferred the land about here on the Abbots of Westminster, also built the bridge for their accommodation. The road was the only way to London from the west, and the stream was broad and rapid. The bridge was situated in front of the present entrance into the Park by Albert Gate, and part of it still remains underground, while the other portion was removed for the Albert Gate improvements. In the churchwardens’ accounts of St. Margaret’s, Westminster, are the following entries regarding the bridge: 1630. Item, received of John Fennell and Ralph £ s. d. Atkinson, collectors of the escheat, for repair of Brentford Bridge and Knightsbridge . . . . 23 6 4