M 1921 was founded the Foot-Ball Club of Paços de Arcos, and a year later (1922) Sport Lisboa and Paço de Arcos. In 1926, these two clubs merged and formed the Paço de Arcos Sports Club. The academic sportsman of Paço de Arcos was born in 1937, and the Paço de Arcos Hockey Club in 1939. In 1939. In 1944, these clubs merged with the Paço de Arcos Sports Club to form the sports club of Paços de Arcos (CDPA). The oldest, the Foot-Ball Club de Paços de Arcos was founded on 1-3-1921, so this date was considered Date of Foundation of the CDPA.