It was not yet in Écône, and it was not under the name of Saint Pius X.
But on October 13, 1969, exactly 50 years ago, 9 seminarians, exhausted of the insanity reigning in seminaries everywhere, asked Archbishop Marcel Lefebvre (who had been constrained to resign as Superior General of the Fathers of the Holy Spirit the previous year) to be guided by him in a new seminary.
They assembled in Fribourg, at the Saint John Bosco House at route de Marly. It was the embryo of what would become the Priestly Fraternity of Saint Pius X (Society of Saint Pius X).
Congratulations to the work of Archbishop Lefebvre on this Jubilee! (More information in French here.)