Jenson sits next to 4 phonetic neighbors — Jensen, Jason, and Genson are the closest matches by sound. Most share Jenson's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"son of Jens (John)"
"from Percy (Norman place name)"
"spear, acquired"
"descendant of the king"
"brave bear, strong as a bear"
"god-helmet"
"dragon, serpent"
"great river, wide flowing water"
"bright settlement, day town"
"stellar explosion, burst of light"
"tailor, cutter of cloth"
"from Saint Denis"
"to conquer, to win"
"from Hugh's town"
"god of war"
"dove, peaceful one"
"ruler of the sea"
"son of Carr, marshy land"
"from the heath"
"honorable, morally excellent"
Similar sound: These names share phonetic patterns with Jenson — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Scandinavian origins, giving them the same cultural heritage as Jenson.
Rhythm: Jenson is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.