A number in Germany supporting Mark, rejecting St Francis (6)
I believe the answer is:
xavier
'st francis' is the definition.
(I've seen this before)
'a number in germany supporting' is the wordplay.
'number' becomes 'xvi' (XVI is an example).
'in' indicates putting letters inside.
'germany supporting' becomes 'er' (I can't explain this - if you can you should give a lot more credence to this answer).
'a' placed inside 'xvi' is 'xavi'.
'xavi'+'er'='XAVIER'
'mark rejecting' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for xavier that I've seen before include "St Francis -, sixteenth century Spanish Jesuit missionary" , "St Francis . . . . . ., founder Jesuit" , "St Francis ---, Apostle of the Indies" , "St Francis ...... helped found the Jesuits" , "Catholic missionary" .)