Eastyn sits next to 4 phonetic neighbors — Easton, Aston, and Payton are the closest matches by sound. Most share Eastyn's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"east settlement, east town"
"resurrection"
"grace, blessing (Japanese 恵奈)"
"heavenly"
"female warrior, conqueress"
"of Mars, belonging to the war god"
"beloved sky"
"praised, celebrated"
"sky, heaven"
"dweller near the ash tree grove"
"city of mosaics"
"courageous, brave (via Riley)"
"unlucky, ill-omened"
"esteemed, beloved"
"purity, innocence"
"joyful, lively (phonetic suggestion)"
"beloved"
"snow-covered, snowy"
"descendant of the fire god"
"resolute protector"
"God is my strength"
Similar sound: These names share phonetic patterns with Eastyn — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Eastyn.
Rhythm: Eastyn is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.