McKinley

McKinley is a unisex given name of English origin, derived from a Scottish and Irish surname. The surname McKinley is an Anglicized form of the Gaelic Mac Fhionnlaigh, meaning “son of Fionnlagh” (Fionnlagh itself meaning “fair warrior” or “fair hero”). Historically, the McKinley clan belonged to the ancient Ulaid race of northeastern Ireland and was a branch of the MacDunleavy dynasty, who were kings of Ulaid. The surname is also associated with County Donegal in Ireland and the Scottish Highlands.

Notable Bearers

The most famous bearer of the surname McKinley is William McKinley (1843–1901), the 25th president of the United States. His presidency, marked by the McKinley Tariff and the Spanish–American War, ended with his assassination in 1901. The name McKinley gained widespread use as a given name in America following his election and assassination—most popular among boys in the late 19th and early 20th centuries.

The highest peak in North America, Denali (formerly Mount McKinley), was renamed in his honor, further cementing the name’s association with American greatness.

Gender Shift

While McKinley was predominantly male for most of its use, a notable shift occurred in the 1990s: it began growing in popularity for girls, likely influenced by a surge of feminine names starting with Mac or Mc, such as Mackenzie and McKenna. Today, McKinley is among a pool of unisex surnames-turned-first-names, with modern usage favoring slightly more for girls according to US birth data.

• Meaning: Son of Fionnlagh (“fair warrior”)
• Origin: Scottish and Irish
• Type: Unisex given name (historically masculine, modern feminine)
• Usage regions: English-speaking countries (especially the United States)