Tallen sits next to 5 phonetic neighbors — Tallon, Talon, and Allen are the closest matches by sound. Most share Tallen's Welsh cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"high prominence, brow"
"hunter, huntsman"
"may God protect"
"raven sword, renowned with the blade"
"drawn out of the water"
"heart, mind (from Hugh root)"
"land of the Celtic people"
"man from the Adriatic"
"black, dark-complexioned"
"heroic, on a grand scale"
"chief hero"
"one who bakes bread"
"son of Stephen, one who wears the crown"
"mold, form (original Arabic root)"
"law settlement, from Lexington"
"hilltop lake"
"vigor, intensity"
"son of the gray-haired one"
"to gain, to win, to cultivate"
"fragrant ointment"
Similar sound: These names share phonetic patterns with Tallen — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Welsh/Celtic origins, giving them the same cultural heritage as Tallen.
Rhythm: Tallen is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.