* January 13 1905, New Orleans La.
† July 22, 1995, New Orleans La.

As a brass band musician he played with: Excelsior, Eureka, Chris Kelly, Henry Kid Rena, Tuxedo  Brass Band

His grandfather was "Professor" Jim Humphrey, his father the clarinetist Willie Eli Humphrey and his brothers the clarinetist Willie James Humphrey and trombonist Earl Humphrey. Percy was the youngest.

Percy Gaston Humphrey was on the way up in the Golden Era of New Orleans jazz in the Twenties. He joined the famed Eureka Brass in his early days and became its first trumpeter and later (in 1947 16)its leader. He led his own jazz band in the city during the Forties and from 1951 to 1953 worked in the band of that New Orleans icon, the clarinetist George Lewis. He also played in dance bands and, when the Preservation Hall opened as a tourist attraction in 1961, worked there both with his own band and that of the pianist Sweet Emma Barrett. http://findarticles.com/p/articles/mi_qn4158/is_19950725/ai_n13996645

He started out as a drummer, then changed to trumpet, working his way up to the position of first trumpet in the Eureka Brass Band, one of the city's most important. In the 1950's he took over as leader of the group. In 1961 he started at the recently opened Preservation Hall in New Orleans, working there regularly until March of 1995. In the 1970's he also worked with the New Orleans Joymakers. http://query.nytimes.com/gst/fullpage.html?res=990CE6D61630F936A15754C0A963958260

During 1951-1953 Percy played with George Lewis.
In the late 1920' he played with the Chris Kelly Brass Band.
He played and was leader of the Eureka Brass Band

Sources (internet):

Sources (brassband history):
16 New Orleans Jazz, family album by Al Rose and Edmond Souchon