Garth is a name of Old English origin, derived from the word "gar", which means "spear". It is also associated with the Old Norse name "Guthormr", which means "spear warrior". The name Garth was particularly popular during the Middle Ages in England and Scotland. It was often used as a given name but could also be found as a surname. In some cases, it was used interchangeably with other names of similar meaning, such as Gareth or Garreth. Today, Garth is still used as a given name, though it is not as common as it once was. It is considered to be a strong and traditional name that carries a sense of history and heritage.
"Garth was quite popular in the early to mid-20th century, with peak years being 1953 (158 births) and 1954 (268 births). However, its usage has significantly declined since the 1970s, with only a handful of births annually from the 1990s onwards."