PYCARD

Pycard, also spelt Picard and Picart (late 14th century – early 15th century) was an English or French Medieval and Renaissance transitional composer.

He may have served in John of Gaunt's household in the 1390s as 'Jehan Pycard alias Vaux'. The name "Picard" suggests a French origin, but his music is regarded as being in an English tradition. He is one of the most prolific composers represented in the Old Hall Manuscript (British Library: Additional 57950), with nine works from it attributed to him. His music is in the ars nova style, and is unusual in its virtuosity.

...
Wikipedia