The Old Hall Manuscript - folio 12v
Composer Roy Henry is named on this page - and this is likely to be either King Henry V or possibly Henry IV, which perhaps explains the more lavish decoration.
The manuscript contains 148 compositions and is the most important source of information on late medieval English Music.
Composers with works in the Old Hall Manuscript include Leonel Power, Pycard, William Typp, Thomas Byttering, Oliver, Chirbury, Excetre, John Cooke, Roy Henry (probably King Henry V, but possibly King Henry IV), Queldryk, John Tyes, Aleyn, Fonteyns, Gervays, Lambe, Nicholas Sturgeon, Thomas Damett
Origin; England, Add MS 57950, Images from the British Library manuscript website