The Royal Doulton company began as a partnership between John Doulton, Martha Jones, and John Watts, as Doulton bought (with £100) an interest in an existing factory at Vauxhall Walk, Lambeth, London, where Watts was the foreman. They traded as Jones, Watts & Doulton from 1815 until Martha Jones left the partnership in 1820, when the trade name was changed to Doulton & Watts. The business specialised in making salt glaze stoneware articles, including utilitarian or decorative bottles, jugs and jars, much of it intended for inns and pubs. In 1826 they took over a larger existing pottery on Lambeth High Street.
The company took the name Doulton & Co. in 1854 after the retirement of John Watts in 1853, and a merger with Henry Doulton and Co. (see below), although the trading name of Doulton & Watts continued to be used for decades. For some of the 19th century there were three different businesses, run by the sons of John Doulton, and perhaps with cross-ownership, which later came back together by the end of the century. By 1897 the total employees exceeded 4,000. Reference: Wikipedia
Below are some examples of Doulton figurines.