Hedged valley or hay valley
Hadyn is a modern spelling variant of the Welsh name Hayden. It originally derived from a surname based on a place name, likely referring to a valley enclosed by hedges or used for hay production. While the 'y' spelling gives it a contemporary, unisex feel, it retains its roots in the rolling landscapes of the British Isles.
Fewer than 5 boys were named Hadyn in 2025.
US births per 5-year period, 1990–present (SSA data).
British author and creator of The Floodland series
