Percival sits next to 3 phonetic neighbors — Percy, Perseus, and Parsifal are the closest matches by sound. Most share Percival's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"pierce the valley"
"invented blend of Jared and Gareth"
"from the Egnatius family name"
"enlightenment, awakening"
"darling, beloved"
"from Scotland, Scotsman"
"follower of Dionysus, god of wine"
"follower of Calvin (in Protestant tradition)"
"lime tree hill"
"son of Garret, son of the spear bearer"
"God is gracious"
"from Sweden, soft napped leather"
"craftsman who works with metal"
"from India"
"man from the mountain"
"dweller near the woods"
"a type of ocean fish"
"thunder ruler"
"beauty, ornament"
"from the steep place"
"from Leicester"
Similar sound: These names share phonetic patterns with Percival — 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 Percival.
Rhythm: Percival is a 3-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.