In fact, i am aware of it.
When he used the word “Catholic” Bishop Ignatius of Antioch meant “universal” which is the dictionary meaning of the word. He did not mean the Roman Catholic Church, since he died in A.D 108, hundreds of years before the Great Schism.
How do you know then what Ignatius meant by using the word “Catholic” in his letter?
The Roman Catholic Church as you know it came into being in 1054, when the the Early Church separated into Western (Roman Catholic) and Eastern(Orthodox) Christianity.
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The Roman, in the name of the Catholic Church…or the word “Roman” was not added to the name of the CC till around the Reformation…as a derogatory name for the Catholics who remained with the Bishop of Rome. I think it was the Anglicans who appended the name.
After 1054, it was simply the Catholic and Orthodox…