Work to formally establish a breed with combined Persian and Siamese traits, explicitly for the cat fancy, began in the United States in the 1930s at Harvard University, under the term Siamese–Persian, and the results were published in the "Journal of Heredity" in 1936, but were not adopted as a recognized breed by any major fancier groups at the time. Brian Sterling-Webb independently developed the cross-breed over a period of ten years in the UK, and in 1955 it was recognized there as the Longhaired Colourpoint by the Governing Council of the Cat Fancy (GCCF).