Old friend or wise protector
Aldyn is a modern variant of the Old English name Alden. It is derived from the elements 'eald', meaning old, and 'wine', meaning friend, suggesting a person who is a loyal and wise companion.
Less common today
Aldyn isn't in the latest US Top 1000. It last peaked at #7,336 in 2011.
US births per 5-year period, 1990βpresent (SSA data).