Here is a link to an interesting interview by PID Radio on the Prophecy of the Popes and its termination in a final Pope named Peter the Roman: http://www.pidradio.com/2012/02/26/p-i-d-radio-22612-peter-the-roman-the-final-pope/
The interview contains many interesting details as well as a fascinating attempt to fit reformed historicist eschatology into a dispensational futurist framework.
St. Malachy’s Prophecy of the Popes ends this way:
In the extreme persecution of the Holy Roman Church, there will sit [i.e., as bishop] Peter the Roman, who will pasture his sheep in many tribulations: and when these things are finished, the city of seven hills will be destroyed, and the terrible judge will judge his people.
Will the next Pope be Peter? Only time will tell.