John of London

John of London (fl. 13th century), mathematician, was described by Roger Bacon as one of two "perfect" mathematicians, together with Pierre de Maricourt. Bacon probably knew John in Paris in the 1260s.[1]

For the 17th-century ship, see John of London (ship). For the 12th-century lawyer, see John of Tynemouth (canon lawyer).

No works are certainly attributed to him, but he may be the author of an influential table of stellar co-ordinates. He may also be the "Master John of London" who designed a form of astrolabe and was described by Roger of Lincoln as "astronomus famosus"[1] ("renowned astronomer").

Notes
  1. Knorr, Wilbur R. (2004). "John of London". Oxford Online Dictionary of National Biography. Oxford University Press. doi:10.1093/ref:odnb/59922. (subscription or UK public library membership required)
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