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"
"spear"
"raven's island"
"strong like a boar"
"brother, kin"
"descendant of Ceallach"
"champion"
"eagle power, eagle ruler"
"valley of the hares"
"Roman fort on the River Leir"
"follower of Dionysos, of Zeus"
"word name from archery term"
"deep blue color"
"supplanter, may God protect"
"bent grass clearing, meadow"
"helpful person"
"falling, resolution"
"east settlement, eastern village"
"life's path, quest"
"good race, fine stock"
"stubborn one"
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.