Sadler

Sadlers 19.11.1799 at Nicholson's lecture / 14.1.1800 Sadler at Nicholson's / 29.7.1835 M T Sadler dies
James Sadler DNB 1753-1828 balloonist and chemist was a likely contact of William Nicholson's DNB 1753-1815. His son John 1779-1838 may have been included in the plural at the lecture. Michael Thomas Sadler DNB 1780-1835 was certainly the 1835 entry, Godwin didn't record having met him but read him in 1829.