Tadhg sits next to 4 phonetic neighbors — Teague, Tiger, and Tide are the closest matches by sound. Most share Tadhg's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"poet, philosopher"
"protector of mankind"
"born of yew tree"
"high and mighty, chief"
"cloud"
"clerk, scholar, scribe"
"red-haired fighter"
"red, ruddy"
"slender, narrow"
"son of Faelan (the little wolf)"
"dark one, little dark-haired one"
"little fire, flame"
"war, strife"
"dark warrior, little dark chieftain"
"from Arcy, Norman town"
"from the oak grove"
"from the fortress"
"slender, narrow"
Similar sound: These names share phonetic patterns with Tadhg — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old Irish origins, giving them the same cultural heritage as Tadhg.
Rhythm: Tadhg is a 1-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.