St. Cyril of Jerusalem: "The mother of us all"

“AND if ever you are sojourning in cities, inquire not simply where the Lord’s House is (for the other sects of the profane also attempt to call their own dens houses of the Lord), nor merely where the Church is, but where is the Catholic Church. For this is the peculiar name of this Holy Church, the mother of us all.”

~St. Cyril of Jerusalem (ca. 313-386): Catecheses, No. 17:14.