According to the Internet source given below, John Baldwyn [Baldwin] was an English musician. The name however may refer to others of the same name. A John Baldwin is recorded at Eton College from about 1448 through 1452 (?) and from 1452 (?) through some time in the 1450s at King's College (Cambridge); a John Baldwyn, credibly the same one, was awarded the degree of B.Mus (Cambridge) 1470-71. In Deus Omnipotens
, Cyril F. Simkins refers to a John Baldwin, a lay-clerk at St. George's Chapel, Windsor. Finally, a Sir John Baldwyn was Vicar-Choral of Wells Cathedral from about 1486 through the beginning of the next century.
||Brief biography by HOASM