Francesco Pacelli (February 1, 1872 – April 22, 1935) was an Italian lawyer and the elder brother of Eugenio Pacelli, who would later become Pope Pius XII. He acted as a legal advisor to Pope Pius XI; in this capacity, he assisted Cardinal Secretary of State Pietro Gasparri in the negotiation of the Lateran Treaty, which established the independence of Vatican City.
Pope Pius XII was born in 1877
If Francesco Pacelli was born Feb 1 1872 and is the eldest the brother of Pope Pius XII, Than Pope Pius XII would have to be born after that date, however it doesnt state the actual year he was born.  So it could or could not be correct