Wallace sits next to 3 phonetic neighbors — Wallis, Willis, and Walter are the closest matches by sound. Most share Wallace's Scottish cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"foreigner, Welshman (Celtic speaker)"
"Yahweh has created"
"brave counsel"
"from the hollow"
"rock, harmony"
"God sees, God is my strength"
"truly brave"
"highest point, God's place"
"reborn, born again"
"dweller near the heath"
"one who pursues"
"sky father, divine sky"
"wolf"
"holy, sacred place"
"place of hawks, kite's settlement"
"noble elder"
"divine might"
"Lord have mercy (liturgical)"
"battle chieftain (Cerdic interpretation)"
"tournament fighter"
"courageous heart"
Similar sound: These names share phonetic patterns with Wallace — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French/Norman origins, giving them the same cultural heritage as Wallace.
Rhythm: Wallace is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.