John Jones (astronomer)
John Jones, also known as Ioan Bryngwyn Bach and Y Seryddwr, was a Welsh amateur astronomer.
He was born at Bryngwyn Bach, Dwyran, Anglesey, and received only an elementary education. From the age of twelve, he worked as a farm labourer. He later worked as a counter of cargoes of slate as they were loaded on to ships in Bangor, in modern Gwynedd. Unusually for someone of his background, he was not only a musician and a poet but proficient in several languages. He is noted mainly for his interest in astronomy: he constructed his own telescopes – including "Jumbo", reputed to be the first silver-on-glass reflecting telescope in Wales.
He died at Bangor in 1898.