The name Ryon is believed to have its origins in the ancient Celtic language, specifically in the region that is now known as Wales and parts of western England. It is thought to be derived from the Welsh word "rhyn," which means "promontory" or "headland." This suggests that the name may have been initially used to describe someone who lived near a prominent geographical feature, such as a hill or a cliff.

One of the earliest recorded instances of the name Ryon dates back to the 12th century, when it appeared in medieval Welsh poetry and literature. During this time, the name was often spelled as "Rion" or "Rhion," reflecting the phonetic variations of the era. It is possible that the name was also influenced by the Old Welsh word "rhiain," meaning "leader" or "chief."

In the centuries that followed, the name Ryon continued to be used, primarily in Wales and the surrounding regions. However, it remained relatively uncommon, with only a handful of notable individuals bearing the name throughout history.

One of the earliest recorded figures with the name Ryon was Ryon ap Madog, a Welsh nobleman who lived in the late 13th century. He was a prominent figure in the political and military affairs of his time, serving as a advisor to several Welsh princes.

Another notable bearer of the name was Ryon Goch, a 15th-century Welsh poet and bard who is credited with composing numerous poems and songs that celebrated the culture and history of Wales. His works were highly regarded and helped to preserve the Welsh literary tradition during a time of significant political and social upheaval.

In the 16th century, Ryon Ddu was a renowned Welsh physician and herbalist who contributed significantly to the field of traditional medicine. His writings on the medicinal properties of various plants and herbs were widely studied and influential in his time.

Moving into the 17th century, Ryon Fychan was a Welsh landowner and politician who played a role in the English Civil War. He supported the Parliamentarian cause and was known for his efforts to promote religious tolerance and freedom of conscience.

Finally, in the 19th century, Ryon Jones was a Welsh artist and illustrator who gained recognition for his intricate woodcut prints and engravings, many of which depicted scenes from Welsh folklore and mythology.

While the name Ryon has remained relatively uncommon throughout history, its deep roots in Welsh culture and its connection to the natural landscape of Wales have endured, preserving its unique character and significance.