Heather field or pool by the heather
Hadlyn is a modern English coinage, likely a blend of the surname Hadley and the popular suffix -lyn. Hadley is derived from Old English elements meaning a field of heather, while the -lyn suffix adds a contemporary, feminine touch.
Less common today
Hadlyn isn't in the latest US Top 1000. It last peaked at #7,589 in 2022.
US births per 5-year period, 1990βpresent (SSA data).