Crossword Genius

Pope believing at last, touching blood-stained cross (7,1)

Ross

I believe the answer is:

gregory x

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'pope believing at last touching blood-stained cross' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'pope believing at last touching blood-stained cross' is the wordplay.
I cannot really understand how this works, but
'pope' could be 'gregory' (Gregory is an example) and 'gregory' is found in the answer.
'cross' could be 'x' (X is cross-shaped) and 'x' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Independent.
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