Hay valley or hedged settlement
Haidon is a modern spelling variant of the English surname Hayden. It derives from Old English elements meaning 'hay valley' or 'hedged enclosure,' originally used to describe someone living near such a landscape feature.
Less common today
Haidon isn't in the latest US Top 1000. It last peaked at #9,650 in 2009.
US births per 5-year period, 1990–present (SSA data).
