Complex sentence: John Linnell (1729--96), was an eighteenth-century cabinet-maker and designer who was in charge of one of London's largest cabinet-makers firms of the 18th C with many important and prominent patrons.
Split into simpler sentences: John Linnell (1729--96), was an eighteenth-century cabinet-maker and designer. Linnell was in charge of one of London's largest cabinet-makers firms of the eighteenth century with many important and prominent patrons.