There was a building in Bolton, Valletts Buildings, where some of my family lived in the 19th Century. Would Matthieu Valette have been a Huguenot? "Valletts Buildings was named after Matthieu Valette (Vallet), a Frenchman who came to England in 1787 to set up a works for making a new bleaching liquor near Liverpool. His fortune and that of the Ainsworths of Halliwell Bleachworks were closely bound up, and it was the Ainsworths who persuaded Valette to enter their employ to help them introduce chemical bleaching at Halliwell." Martin Briscoe Fort William M&LFHS | Gwynedd FHS

Hi Martin It's very unlikely, almost impossible that he would have been a Huguenot though he may have been a Protestante. By 1787 (immediately before the Revolution here) it is more likely that he would just have been an economic migrant as Huguenot persecution had stopped about 20 years previously having been falling away from broadly 1710. Regards Tony Fuller Huguenot Trails