Apsley Pellatt (junior) was the son of Apsley Pellatt (senior) (1736–1798), of Lewes, Sussex, and of St Margaret's, Westminster, and Sarah, daughter of Thomas Meriton, of Bermondsey, Surrey.
Pellatt lived at The Friars, Lewes, and ran his business at St Paul's Churchyard, London.
In 1807[4] he took out a patent for the manufacture of lights (round lens-shaped windows like portholes) to allow natural light to illuminate the interiors of dark rooms, especially the holds of ships.
Banking records at C. Hoare & Co show extensive and regular deposits made to chemist and mineralogist James Smithson, suggesting a strong financial or scientific relationship with the Blackfriars glass maker.
Apsley (junior) was buried with his wife in the Cribbe family vault in Bunhill Fields, London.