One aspect of both Catholicism and Orthodoxy that I find morbid is the emphasis on relics. Another Catholic on another board's favorite expression when Mary was discussed was "Show me the bones". What difference does it make where Peter's wife is buried? Does the RCC claim to have her bones? Peter could have been martyred in many places in the Roman Empire.
PETRONILLA'S TOMB IS ALSO FOUND IN ROME!
Tradition has it that Peter's family accompanied him on his travels throughout the Roman Empire; and STRONG TRADITIONS OF PETRONILLA exist to this day In England and in France.
"The apostle Peter had a daughter born in lawful wedlock, who accompanied him on his journey from the east" (The Search For the 12 Apostles).
She became the special patroness of the French. And until recently, the French ambassador to the Vatican would visit Petronilla's shrine in Rome immediately after presenting his credentials to the pope.
Near the town of Bury St Edmunds in England , her name (abbreviated to St. Parnel) was reverenced; and there still exists a church named after her in Whipstead.
She is depicted on screens at Litcham and North Elham, both in Norfolk and also at Somerleyton. On these three screens she is shown holding a book and a KEY -- the latter being a reference to her father Peter.
Osric, king of Northumbria and founder of the famous Abbey of Gloucester, was laid to rest (729 A.D.) in "Petronell's Chapel" in this same Abbey.
She was martyred and buried in the catacombs on the estate of Flavia Domitilla, which is located on the road to Ardea , a mile and a half from Rome.
Petronilla's remains were moved from the estate at the request of the King of France (755-756 A.D.) and buried in a circular chapel on the south side of the old St. Peter's in Rome. Later on, in 1612, her remains were once more removed to a chapel near the east end of the present St. Peter's.
Here we have Proof that Peter along with his family visited and died IN ROME!