Who was the angel John worshiped in the book of Revelation?

Revelation 17:1a - Then one of the seven angels who had the seven bowls came and talked with me...

Rev. 19:10 - And I fell at his feet to worship him. But he said to me, "See that you do not do that! I am your fellow servant, and of your brethren who have the testimony of Jesus. Worship God! For the testimony of Jesus is the spirit of prophecy."

This angel serves as John's "escort" through the latter visions of Revelation. His name is never given.