The name Jhon is a variant spelling of the name John, which has its origins in the Hebrew language. It is derived from the Hebrew name Yohanan, meaning "Graced by God" or "Yahweh is merciful". The name gained widespread popularity during the Middle Ages, particularly after the birth of John the Baptist, a prominent figure in Christianity.

In ancient texts, the name Yohanan appears frequently in the Old Testament, with several notable figures bearing this name, including John the Baptist and John the Evangelist, who is credited with writing the Gospel of John in the New Testament. The name's association with these biblical figures played a significant role in its widespread adoption among Christians.

One of the earliest recorded examples of the name Jhon can be found in the Domesday Book, a survey of lands in England commissioned by William the Conqueror in 1086. This document mentions several individuals with the name Jhon, indicating its use in medieval England.

Throughout history, the name Jhon has been borne by many notable individuals. Here are five examples:

1. John Wycliffe (c. 1320 - 1384), an English theologian and scholar who is credited with translating the Bible into English for the first time.
2. John Hus (c. 1369 - 1415), a Czech priest, philosopher, and early church reformer who was burned at the stake for his beliefs.
3. John Calvin (1509 - 1564), a French theologian and prominent leader of the Protestant Reformation, known for his influential work "Institutes of the Christian Religion".
4. John Locke (1632 - 1704), an English philosopher and physician who is widely regarded as one of the most influential thinkers of the Enlightenment era.
5. John Hancock (1737 - 1793), an American merchant and politician who served as the first and third Governor of Massachusetts and is famous for his large and stylish signature on the Declaration of Independence.

While the spelling "Jhon" is less common today, it remains a variant of the enduring name John, which has held a significant place in history across various cultures and religions.