Not to disappoint Ray, even though he already was disappointed I didn't have this up earlier, here is the latest installment of WKJ. At least this question immediately narrows it down to just a few.
Category: ApostlesThis apostle, who deemed himself unworthy to be crucified on the same type of cross as Christ, asked to be tied to a Crux decussata or an X shaped cross.
Bonus (easy once you know the apostle): which country bears this symbol on their provincial flag (coat of arms you could say).
St. Alex says, please place your answer in the form of a question in the combox, and say a few Hail Marys while you wait for the answer to be revealed.
Demerits for using Google and other sneaky searches. Educated guesses are welcome and encouraged. Good luck!!