1821
George IV, King of England, Entering Dublin, a painting by William Turner, depicts a band of cavalry musicians, including trombones and serpents (see detail and full image below; public domain) (National Gallery of Ireland).

George IV, King of England, Entering Dublin, a painting by William Turner, depicts a band of cavalry musicians, including trombones and serpents (see detail and full image below; public domain) (National Gallery of Ireland).
