A Dictionary of Music and Musicians/Costeley, William
COSTELEY, William, a Scotch musician, born 1531, settled in France, and was organist to Henri II and Charles IX. Author of a treatise called 'Musique' (Paris 1579); songs in the 'Chansons à 4 et 5 parties' published by Le Roy and Ballard (Ib. 1567). Some pieces of his are in the library at Orleans. Costeley was one of the society called 'Puy de musique en honneur de Ste. Cecile' (1571) at Evreux, and sometimes entertained the members at his own house in Evreux [App. p.600 "correct the statement that the society founded by him was called 'Puy de Musique, etc.,' that title referring to a musical contest established by the guild in 1575, at which Orlando de Lassus carried off the first prize, a silver harp"]. He died there in 1606 [App. p.600 "Feb. 1"].
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