This never occurred to me until just now: isn’t a requirement of English citizenship to submit to the authority of the Sovereign, who is also the Head of the Church of England?
Therefore, isn’t being both English and Catholic a contradiction, that is, either you are one or the other, but impossible to be both?
I suspect that I am wrong, as I have never read any of the Anglo-Catholic writers of the 20th century bring this up, but it is, for now, at least, an intriguing question.
Not at all. UK Citizens of another faith other than CofE swear secular allegiance to the Queen or Sovereign as their rightful ruler on Earth, not as the head of their Church. As far as I know only CofE adherents are required to swear loyalty to the Sovereign as head of the Church. circa:
Mat 1:16-25
16 And they sent to him their disciples with the Herodians, saying: Master, we know that thou art a true speaker, and teachest the way of God in truth, neither carest thou for any man: for thou dost not regard the person of men.
17 Tell us therefore what dost thou think, is it lawful to give tribute to Caesar, or not?
18 But Jesus knowing their wickedness, said: Why do you tempt me, ye hypocrites?
19 Shew me the coin of the tribute. And they offered him a penny.
20 And Jesus saith to them: Whose image and inscription is this?
16 “The Herodians”… That is, some that belonged to Herod, and that joined with him in standing up for the necessity of paying tribute to Caesar, that is, to the Roman emperor. Some are of opinion that there was a sect among the Jews called Herodians, from their maintaining that Herod was the Messias.
21 They say to him: Caesar’s. Then he saith to them: Render therefore to Caesar the things that are Caesar’s; and to God, the things that are God’s.
22 And hearing this they wondered, and leaving him, went their ways.
23 That day there came to him the Sadducees, who say there is no resurrection; and asked him,
24 Saying: Master, Moses said: If a man die having no son, his brother shall marry his wife, and raise up issue to his brother.
25 Now there were with us seven brethren: and the first having married a wife, died; and not having issue, left his wife to his brother.