Pope Benedict XVI's brother Georg Ratzinger poses for a photo in his house in Regensburg, southern Germany, on February 11, 2013. The pope's brother said that the pontiff had been considering his resignation "for a few months" and confirmed that the 85-year-old Benedict XVI was "feeling his age. AFP PHOTO / ARMIN WEIGEL GERMANY OUT

Pope Benedict XVI's brother Georg Ratzinger poses for a photo in his house in Regensburg, southern Germany, on February 11, 2013. The pope's brother said that the pontiff had been considering his resignation "for a few months" and confirmed that the 85-year-old Benedict XVI was "feeling his age. AFP PHOTO / ARMIN WEIGEL GERMANY OUT

Pope Benedict XVI's brother Georg Ratzinger speaks to journalists in his house in Regensburg, southern Germany, on February 11, 2013. The pope's brother said that the pontiff had been considering his resignation "for a few months" and confirmed that the 85-year-old Benedict XVI was "feeling his age. AFP PHOTO / ARMIN WEIGEL GERMANY OUT

Pope Benedict XVI's brother Georg Ratzinger poses for a photo in his house in Regensburg, southern Germany, on February 11, 2013. The pope's brother said that the pontiff had been considering his resignation "for a few months" and confirmed that the 85-year-old Benedict XVI was "feeling his age. AFP PHOTO / ARMIN WEIGEL GERMANY OUT

Thia handout picture released by the Vatican Press office on April 15, 2012 shows Pope Benedict XVI (R) praying with his brother, Mons. Georg Ratzinger in the morning of April 14. RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP / OSSERVATORE ROMANO"

(FILES) - Photo taken on September 13, 2011 shows Pope Benedict XVI's brother Georg Ratzinger as he poses with his new book "My brother the Pope" ahead a presentation in Regensburg, southern Germany. The pope's brother said that the pontiff had been considering his resignation "for a few months" and confirmed that the 85-year-old Benedict XVI was "feeling his age. Pope Benedict XVI stept down, on February 11, 2013. AFP PHOTO/CHRISTOF STACHE

FILES - Picture taken on July 31, 2008 shows Pope Benedict XVI (L) as he walks with his brother Bishop Georg Ratzinger in the garden of his holiday residence in Bressanone. The pope's brother said that the pontiff had been considering his resignation "for a few months" and confirmed that the 85-year-old Benedict XVI was "feeling his age". AFP PHOTO/ OSSERVATORE ROMANO/ FRANCESCO SFORZA

In this image taken from video Pope Benedict XVI, right, visits his older brother Georg who is recovering after being fitted with a pacemaker earlier this week, at Rome's Polyclinic Gemelli Hospital, Friday, Aug. 5, 2005. (AP Photo/APTN)

PHOTO: EAST NEWS/AFP Pope Benedict XVI in his papamobile rides past his brother Georg Ratzinger (R) during his first mass in St Peter's Square at the Vatican 24 April 2005. Hundreds of thousands of pilgrims flocked to the Vatican early Sunday for the inaugural mass of Pope Benedict XVI, who was to be installed as the Roman Catholic Church's 265th pope. AFP PHOTO VINCENZO PINTO

PHOTO: EAST NEWS/AFP JOZEF RATZINGER - PAPIEZ BENEDYKT XVI - JAKO STUDENT WE FREISING, Z RODZINA, RETRO Picture taken in the year 1951 shows the family of Josef Ratzinger (up, R) in Freising, Bavaria, after the ordination of himself and his brother Georg (up L). Germany's Cardinal Joseph Ratzinger was elected the 265th pope of the Roman Catholic Church on 19 April 2005 and will take the name Benedict XVI, the Vatican announced. Bottom row : his sister Maria, his Mother Maria and his fater Josef. 000_PAR2005041946677