[imardmd1]

These are the beginnings of the Catholic Church and the Church was called Catholic to distinguish it from the false preaching by others.

Not any place in the Greek New Testament that I can find. Nor even in the DRB translation, let alone capitalized.

[af_vet_1981]

• Then had the churches rest throughout all Judaea and Galilee and Samaria, and were edified; and walking in the fear of the Lord, and in the comfort of the Holy Ghost, were multiplied.
• And it came to pass, as Peter passed throughout all quarters, he came down also to the saints which dwelt at Lydda.

ἐκκλησία καθ’ ὅλης
ekklésia kath’ holēs
the churches throughout all

Acts, Catholic chapter nine, Protestant verses thirty one to thirty two,
As authorized, but not authored, by King James
underlines my own