The artists you've mentioned, Thomas, George Murray, and James, may refer to different individuals who were active during the 19th century, but there are no well-documented records of an artistic group or collective that included all three names as a single entity. However, it is possible to provide some information on individuals who shared these names and were known for their contributions to art in their respective eras.
George Murray (1829-1868) was a Scottish artist known for his landscape paintings. He showed an early talent for drawing and was encouraged to pursue art professionally. Murray attended the Trustees Academy in Edinburgh where he trained under notable artists of the time. His works were primarily inspired by the Scottish countryside, and he became known for his ability to capture the atmospheric effects of the Scottish weather on the landscape. Unfortunately, Murray's life was cut short, and he died relatively young, leaving behind a small but respected body of work.
Thomas and James are common names and could refer to numerous artists from the same period. One notable 'Thomas' from the nineteenth century could be Thomas Moran (1837-1926), an American painter and printmaker of the Hudson River School known for his landscapes of the American West. Meanwhile, 'James' could refer to James McNeill Whistler (1834-1903), an American artist known for his paintings and etchings that influenced the Aesthetic Movement.
Without more specific information, it is challenging to provide a more detailed biography that accurately encompasses all three artists as a collective or individual artists with the exact names Thomas, George Murray, and James. Each artist mentioned here has left a unique mark on the art world, and their works continue to be celebrated for their contributions to the development of landscape painting and the broader art movements of their time.