Marquis sits next to 5 phonetic neighbors — Marcus, Marcos, and Marquise are the closest matches by sound. Most share Marquis's French-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"lord of the marches, borderlord"
"tumult, noise"
"modern invented name, possibly 'noble leader'"
"from the River Irvine"
"Yahweh sees"
"strong like a boar"
"fair, attractive"
"speed, power (modern association)"
"Jehovah is God"
"from Saint Denis"
"father of God"
"oak tree"
"people's champion"
"life-giving"
"he who resembles God (rhetorical)"
"to pull, from Norman surname Tirel"
"cross, crossroads"
"bright, clear, famous"
"from the steep place"
"divine, god"
"fire of God"
Similar sound: These names share phonetic patterns with Marquis — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old French origins, giving them the same cultural heritage as Marquis.
Rhythm: Marquis is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.