by January 1913, Churchward was persuaded by the superior adhesion provided by a 4-6-0 and they had all been converted to this wheel arrangement. The new locomotives were numbered 172–190 (renumbered 2972–2990 in 1912). Twelve of the series were named after characters in the novels of Sir Walter Scott. Directors of the GWR accounted for most of the other names. The series was withdrawn between 1931 and 1951. Ladies A second series of ten similar locomotives appeared in May 1906 (Swindon Lot 164), numbered 2901–10 and named after historical, mythological or poetical 'Ladies'. Nos. 2904–6 had short tapered boilers and short smokeboxes, whereas Nos. 2902–03 and 2907–10 had longer versions. All except 2901 had cylinders, giving a tractive effort of . No. 2901 Lady Superior was the first British locomotive to be built with a modern Schmidt superheater. The remainder of the locomotives were fitted with Swindon No.3 superheaters between 1909 and 1911 and were withdrawn between 1933 and 1952. In May 1906 Charles Collett, then assistant manager of Swindon Works, supervised a demonstration run of number 2903 Lady of Lyons, newly released from the erecting shop. By mile-post timings observed from the engine and from passing times recorded at Little Somerford and Hullavington signal boxes, miles apart and with a descending gradient of 1 in 300 between them, a speed of approximately was recorded, but not in a sufficiently accurate manner as to be considered a record. Saints A third series of twenty further locomotives appeared during August and September 1907 (Swindon Lot 170), numbered 2911–30 and named after Saints. The framing for these had long curved ends under the cab and over the cylinders, which greatly improved the rather angular appearance of the earlier locomotives. They were fitted with cone boilers and smokeboxes. In October 1908, No. 2922 Saint Gabriel was fitted with a Swindon No. 2 superheater. The following year the Swindon No. 3 superheater became standard for the class. Between 1909 and 1912 the remainder of the locomotives were fitted with the Swindon No. 3 superheater. The Saints were withdrawn between 1932 and 1951. No. 2925 Saint Martin was rebuilt with smaller wheels in December 1924 to become the prototype Collett 4900 and renumbered 4900 but still carrying the same name. Courts A fourth series of 25 locomotives appeared during the years 1911 to 1913 (Swindon Lots 185, 189 and 192). These were numbered 2931–55 and