The given name Mckayla is a modern variant of the traditional Scottish feminine name Michaela, which itself derives from the Hebrew name Michael meaning "who is like God?". The name Mckayla gained popularity in the late 20th century, particularly in the United States and Canada.

The prefix "Mc" or "Mac" in the name Mckayla is a Scottish Gaelic patronymic meaning "son of". It was originally used to denote the patronymic lineage of a person, indicating that the bearer was the son or daughter of someone with the given name that followed the prefix. Over time, the prefix became an integral part of certain given names, including Mckayla.

While the name Mckayla does not have a long historical lineage, it does share its roots with the ancient Hebrew name Michael. The name Michael is found in various religious texts, including the Bible, where it is the name of an archangel. It has been a popular name throughout history and has been borne by numerous notable figures.

One of the earliest recorded instances of the name Mckayla can be traced back to the late 20th century. However, it is important to note that due to its relatively modern origin, there are limited historical references or famous bearers of this particular spelling.

That said, here are a few notable individuals who have carried the name Mckayla throughout history:

1. Mckayla Maroney (born 1995) - American former artistic gymnast and Olympic medalist.
2. Mckayla Morton (born 1994) - American basketball player.
3. Mckayla Fruge (born 1995) - American softball player.
4. Mckayla Thiessen (born 1988) - Canadian ice hockey player.
5. Mckayla Kruger (born 1988) - South African cricketer.

While the name Mckayla may not have a long and storied history, its roots can be traced back to ancient Hebrew and Scottish Gaelic origins, reflecting the cultural diversity and modern adaptations that have enriched the world of given names.