Jonathan
Jonathan is the Old Testament name that started to replace the stalwart John in the late fifties, sounding more playful, sensitive and modern. Now, after being high on the list for several decades, Jonathan has pretty much lost its luster.
In the Bible, Jonathan was the valiant eldest son of King Saul, and it was his loyal friendship with brother-in-law David that gave rise to the expression "Jonathan and David" to describe devoted, steadfast friends.
It has given rise to numerous spelling variations.

