The name Landon has its origins in the English language, derived from the Old English words "land" and "dun," which together mean "long hill" or "long down." This name likely emerged during the Anglo-Saxon period, which spanned from the 5th to the 11th centuries in what is now England.

While the name Landon does not appear to have any direct references in ancient texts or religious scriptures, it is believed to have been used as a surname or place name before becoming a popular given name. The earliest recorded use of Landon as a first name dates back to the late 19th century.

One of the earliest notable individuals with the name Landon was Landon Carter Haynes (1858-1923), an American politician who served as a U.S. Senator from Kentucky. Another early notable figure was Landon Ronald (1873-1938), an English composer and conductor who served as the principal conductor of the Royal Albert Hall Orchestra.

In the 20th century, the name gained wider popularity, particularly after the presidential campaign of Alf Landon (1887-1987), the Republican nominee who ran against Franklin D. Roosevelt in the 1936 election. Despite his loss, Landon's name became more widely known and used.

Another prominent figure was Landon Laird (1909-1986), an American lawyer and jurist who served as a justice on the Supreme Court of Ohio. Additionally, Landon Kingskey Lockett (1919-1942) was an American athlete who competed in track and field events at the 1936 Summer Olympics in Berlin.

In more recent times, Landon Curt Donovan (born 1982) is an American former professional soccer player who played for the United States national team and various clubs, including the Los Angeles Galaxy and Everton F.C.

These are just a few examples of notable individuals throughout history who have borne the name Landon, showcasing its enduring presence and evolution from its Old English origins to its modern usage as a popular given name.