Aston sits next to 3 phonetic neighbors — Ashton, Easton, and Weston are the closest matches by sound. Most share Aston's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"east settlement, eastern village"
"powerful (alternative interpretation)"
"jewel, gem"
"son of Peter (son of the rock)"
"bright, splendid"
"hero (cultural/gaming)"
"little dark one"
"beloved (David) + valley (Devon)"
"owner, possessor"
"famous through noble birth"
"thunder ruler, powerful"
"one who carves, wood-carver"
"elm grove"
"little bear, bear cub"
"sacred, holy"
"marshy land by a lake"
"held by the heel (biblical reference)"
"growth, abundance, increase"
"son of the south"
"from the coal settlement"
"hero, protector (fictional)"
Similar sound: These names share phonetic patterns with Aston — 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 Aston.
Rhythm: Aston is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.