No biographical details known for sure:
Born 1453?
Possibly King's Scholar, Eton College: on election roll for 1467 when aged 14 (in same cohort as Walter Lambe of Salisbury).
Associated with the university/town (or, less plausibly, the earl) of Oxford in 1490s: GB-Cu Buxton 96 (containing E5) has attribution to 'Johannes Browne Oxonsiensis'.
Still alive, 1502-3, when he composed Stabat iuxta cristi crucem (E8) between deaths of Prince Arthur on 2 April 1502 and Queen Elizabeth of York on 11 February 1503 (Benham 1987).