Answer: The Island of Patmos in the Aegean Sea

John of Patmos is the name given to the author of the Book of Revelation
(or Book of the Apocalypse) in the New Testament.
According to the text of Revelation, the author, who gives his name
as "John," is living in exile on the Greek island of Patmos. In Revelation,
he writes to the seven Christian churches in Asia to relate two apocalyptic visions he has had.
John of Patmos is often referred to as John the Divine, or John the Theologian,
and the message he received is considered divine Revelation by most Christians.
The full title of the Book of Revelation is The Apocalypse of Saint John the Divine.
Apocalypse is a Greek word for revelation or uncovering,
and divine (an old Anglican usage meaning theologian).
He is also known as the Eagle of Patmos and John the Seer.
Several Christian denominations regard him as a prophet and a saint.
John of Patmos, the author of the Book of Revelation, was traditionally believed
to be the same person as both John, the apostle of Jesus and John the Evangelist,
author of the Gospel of John. Justin Martyr, writing in the early 2nd century,
was the first to equate the author of Revelation with John the apostle.
Some biblical scholars now contend that these were separate individuals.

(Source: Wikipedia 2008)

About this Painting:

The painting of St. John the Divine above is by Hans Baldung Grien.
Tempera and oil on wood, it was painted in 1511 and now resides
at the Metropolitan Museum of Art in New York City.

Trivia Fact for September 2008:

The name Jesus in the original Hebrew was Yeshua, spelled יֵשׁוּעַ in Hebrew,
was a common name among Jews of the Second Temple Period,
and is believed by some scholars and religious groups to be the Hebrew
or Aramaic name for Jesus. It is extensively used by Messianic Jews and Hebrew Christians,
as well as others, who wish to use what they believe to be the original
Hebraic pronunciation of Jesus' name. This pronunciation and spelling,
as with many religious and scholarly issues, remains the subject of ongoing debate.

(Source: Wikipedia 2008)