Christ's Disciple, Simon Peter is traditionally considered to have been crucified upside down, as is related by Roman theologian Origen in his work Eusebius.
While Peter's death is believed to be foretold by Christ in scripture, no mention is made of Paul's death. Ignatius of Antioch, the third bishop of Antioch states that Paul was martyred, but no detail has been found in any writing. Church tradition has it that he was beheaded by Nero around 64 to 67 AD by the Emperor Nero at Tre Fontane Abbey.
Peter Paul Borg died in 1934.
Peter Paul Fuchs died in 2007.
Paul Peter Rhode died in 1945.
Peter-Paul Pigmans died in 2003.
Peter Paul Halajian died in 1927.
Peter Paul Althaus died in 1966.
Peter Paul Dobree died in 1825.
Peter Paul Fernandes died in 1981.
Peter Paul Marshall died in 1900.
Paul Peter Meouchi died in 1975.
Paul Peter Ewald died in 1985.
Peter Paul Pugin died in 1904.