The given name Grayston is of English origin, deriving from a combination of the Old English words "graeg" meaning "gray" and "tun" meaning "town" or "settlement." This suggests that the name may have initially referred to someone who lived in a town or village with a grayish appearance or perhaps near a gray stone quarry.

The earliest known record of the name Grayston dates back to the 13th century in England, where it was likely a locational surname before becoming an adopted given name. There are few documented historical references to the name itself, as it was not commonly used in ancient texts or religious scriptures.

One of the earliest recorded individuals with the first name Grayston was Grayston Browne, an English clergyman born in 1588 who served as the Archdeacon of Northampton from 1634 until his death in 1646. Another notable bearer of the name was Grayston Ives (1692-1773), a British architect and surveyor who designed several churches and buildings in London and the surrounding areas.

In the 19th century, Grayston Baker (1808-1890) was an English politician who served as a Member of Parliament for Huntingdonshire from 1857 to 1868. Across the Atlantic, Grayston Miller (1834-1912) was an American businessman and politician who served as the 19th Governor of West Virginia from 1869 to 1871.

One of the most recent historical figures with the first name Grayston was Grayston Burgess (1892-1961), a British actor and screenwriter who appeared in several films and television shows in the early 20th century.

While not a particularly common name, Grayston has been used throughout English-speaking regions over the centuries, often with variations in spelling such as Graiston, Graystone, or Grayston. Its unique blend of Old English elements and locational connotations have made it a distinctive and enduring given name choice.