For the average internet user, this question is practically impossible to answer. 

There are too many popes! But for those lucky few entranced by the game of crossword puzzles,

 they found the best website for solving this type of puzzle. 

Crosswords Online provides you with all sorts of lists containing names of popes, 

including lists containing only their first names and list containing only their last names. 

This makes it easy to find out exactly what your name has been spelt as one minute ago on

 a random crossword puzzle being played across America at any given time.

List of Popes Completely Named by the Start of Their First Name

If you are in need for more assistance, you can visit the Crossword Online Test Center. 

This Test Center will provide you with all sorts of lists containing names

 which you can use to solve crossword puzzles created with the WordWhizzle game maker. 

This game maker is capable of creating hundreds of different crossword puzzles in many different formats;

 including puzzles that contain only letters, trivia questions that might be related to popes or 

even multiple choice questions that require you to choose between two answers. 

The possibilities are endless and this test center is where you will find out exactly what type of puzzles you can create.

For those with a bit more time on their hands, perhaps they are just looking for a little entertainment,

 then why not choose to solve WordWhizzle puzzles? 

There are two versions available for all versions of Microsoft Windows operating system. 

The standard version allows you to create crosswords which contain letters only, 

whilst the enhanced version allows you to create crosswords that contain numbers as well. 

These puzzles might lack a certain level of difficulty but they serve their purpose 

as a way of improving your English spelling or even just as a form of entertainment.

To answer this you can try to find to previous pope surnames.  The first name is usually a given. 

List of Popes Completely Named by the Start of Their First Name

List of Popes Sorted by Last Names Only (lack first names)

Clarification: The above information is to be used for solving Crossword puzzles.\

 It can not be used to answer questions about popes.

  To answer this you can try to find to previous pope surnames.  

The first name is usually a given. 

 The above information has been taken from Wikipedia, which may or may not agree with your knowledge base.  

Therefore it is your responsibility to use this information in a constructive manner.

This screenshot is from WordWhizzle Test Center, which is used for solving the puzzles described in the Wikipedia article above. 

 This test center will help you solve English crossword puzzles created with WordWhizzle game maker.

Clarification: The above information is to be used for solving Crossword puzzles.

 It can not be used to answer questions about popes. 

 To answer this you can try to find to previous pope surnames.

  The first name is usually a given.   

The above information has been taken from Wikipedia, which may or may not agree with your knowledge base.

  Therefore it is your responsibility to use this information in a constructive manner.

This screenshot is from WordWhizzle Test Center, which is used for solving the puzzles described in the Wikipedia article above. 

 This test center will help you solve English crossword puzzles created with WordWhizzle game maker.

Clarification: The above information is to be used for solving Crossword puzzles. It can not be used to answer questions about popes. 

 To answer this you can try to find to previous pope surnames.  The first name is usually a given.  

 The above information has been taken from Wikipedia, which may or may not agree with your knowledge base.  

Therefore it is your responsibility to use this information in a constructive manner.names of popes word whizzle