What does JNO. stand for? 

jno.

John (; JON) is a common male given name in the English language of Hebrew origin. The name is the English form of Iohannes and Ioannes, which are the Latin forms of the Greek name Ioannis (Ιωάννης), originally borne by Hellenized Jews transliterating the Hebrew name Yochanan (יוֹחָנָן‎), the contracted form of the longer name Yehochanan (יְהוֹחָנָן‎), meaning "Yahweh is Gracious" or "Yahweh is Merciful". There are numerous forms of the name in different languages; these were formerly often simply translated as "John" in English, but are increasingly left in their native forms (see sidebar).It is among the most commonly given names in Anglophone, Arabic, European, Latin American, Persian and Turkish countries. Traditionally in the Anglosphere, it was the most common, although it has not been since the latter half of the 20th century. John owes its unique popularity to two highly revered saints, John the Baptist (forerunner of Jesus Christ) and the apostle John (traditionally considered the author of the Gospel of John); the name has since been chosen as the regnal or religious name of many emperors, kings, popes and patriarchs. Initially, it was a favorite name among the Greeks but it flourished in all of Europe after the First Crusade.

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