Complex sentence: He helped to found the Portuguese League of Football, in 1914, predecessor of the Portuguese Football Federation, was also President of Casa Pia Football Club, and founder and director of the sports newspaper, "O Sport Lisboa", from 1913 to 1931.
Split into simpler sentences: He helped to found the Portuguese Football League in 1914, the predecessor of the Portuguese Football Federation. He was also the President of the Casa Pia Football Club and founder and director of the sports newspaper, "O Sport Lisboa", from 1913 to 1931.