William Lassell (1799–1880)
Born 1799 CE, died 1880 CE.
William Lassell (18 June 1799 – 5 October 1880) was an English merchant and astronomer. He is remembered for his improvements to the reflecting telescope and his ensuing discoveries of four planetary satellites.
Text from the Wikipedia article William_Lassell, licensed CC BY-SA 4.0.