Alastair is a Scottish masculine given name, an Anglicized form of the Scottish Gaelic Alasdair, which itself is a Gaelic adaptation of Alexander. Etymology The name ultimately derives from the Greek Ἀλέξανδρος (Alexandros), meaning "defending men" — from ἀλέξω (alexo, "to defend, help") and ἀνήρ (aner, "man", genitive ἀνδρός). In Greek mythology, Alexandros was an alternate name of Paris, prince of Troy. The most famous historical bearer is Alexander the Great, king of Macedon, who built a vast empire in the 4th century BC. His fame spread the name throughout Europe. History and Usage Alastair is the most common Anglicized spelling in Scotland, alongside Alistair and Alister. While the name Alexander has been borne by kings, emperors (e.g., three Russian emperors), and eight popes, Alastair remains distinctively Scottish. The Gaelic original Alasdair has been used in Scotland for centuries, with Alastair appearing as its English-equivalent form. Notable Bearers Notable individuals named Alastair include: • Alastair Adams (b. 1969), English artist • Alastair Aiken (b. 1993), British YouTuber known as "Ali-A" • Alastair Bruce of Crionaich (b. 1960), British journalist, army reservist, and historical advisor • Alastair Biggar (1946–2016), Scotland international rugby union player • Alastair Bellingham (1938–2017), British haematologist The name continues to be used in Scotland, England, and other English-speaking countries, especially those with Scottish heritage. Meaning: "defending men" Origin: Scottish Anglicized form of Alasdair, from Greek Alexander Type: Given name Usage: Predominantly Scottish, also used in other English-speaking regions