The name Kourtney is a modern English feminine name that emerged in the late 20th century. It is believed to be a variation or combination of the French name Courtney, which is derived from the courteous or courtly.

The name Courtney itself has its origins in the Old French word "corteis" or "curteis", meaning courteous or well-mannered. This word can be traced back to the Latin word "cortensis", which means "belonging to the court". The name Courtney was initially used as a surname, referring to someone who worked at or resided in a royal court.

While the name Kourtney does not have a long historical lineage, it gained popularity in the United States and other English-speaking countries in the late 20th century. It is believed to have been influenced by the spelling variations of the name Courtney, as well as the trend of creating unique or unconventional spellings for traditional names.

One of the earliest recorded instances of the name Kourtney can be found in the 1980s, when it started appearing in birth records and census data. However, there are no notable historical figures or references associated with this specific spelling.

Some individuals who have borne the name Kourtney throughout history include:

1. Kourtney Kardashian (born 1979), American reality television personality and socialite.
2. Kourtney Kang (born 1989), American fashion designer and entrepreneur.
3. Kourtney Govro (born 1992), American professional soccer player.
4. Kourtney Topolski (born 1986), Canadian ice hockey player.
5. Kourtney Lofton (born 1987), American professional basketball player.

It is important to note that while the name Kourtney is a modern invention, it draws its roots from the long-standing tradition of courtly names, reflecting the influence of French and Latin on the English language and naming conventions.