Quentin sits next to 3 phonetic neighbors — Quinton, Quinn, and Trenton are the closest matches by sound. Most share Quentin's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"fifth, born fifth"
"plow blade maker or user"
"son of the praised one"
"aspen tree, quaking poplar"
"protector of people"
"flower (from Greek anthos)"
"thorny shrub, prickly plant"
"meditation, absorption"
"from Mauritania"
"spear, battle"
"gift of God"
"modern coined name, son of Bray"
"noble friend, elf friend"
"song, singing bird"
"illustrious through nobility"
"Brixis settlement"
"courageous heart"
"descendant of Flann (ruddy, red)"
"passionate, fiery one"
"peddler, pack-horse driver"
"laughter"
Similar sound: These names share phonetic patterns with Quentin — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Latin origins, giving them the same cultural heritage as Quentin.
Rhythm: Quentin is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.