Heimdall
[ˈheɪmˌdɑːl]Meaning
guardian of the gods in Norse mythology
Background Story
Heimdall is a character from Norse mythology known as the watchman of the gods. He is said to have keen eyesight and hearing, and is destined to blow the horn Gjallarhorn to signal the onset of Ragnarok, the end of the world. His name means 'the one who lights up the world'.

Related Names
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Anglicized form of Alasdair, the Scottish Gaelic form of Alexander