Cannon sits next to 3 phonetic neighbors — Canon, Cannan, and Cannon are the closest matches by sound. Most share Cannon's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"large gun, artillery piece"
"hollow, empty"
"muddy place, ditch"
"dark-complexioned son"
"source of joy"
"remedy, cure (folk etymology)"
"stone worker (via Mason)"
"slender, bright-headed"
"fair-haired one"
"ruler of the people"
"son of Egan, little fire"
"good place"
"ray of light, bright counsel"
"God is salvation"
"cool breeze over the mountains"
"leader, commander (variant interpretation)"
"loved, beloved"
"Botolph's town, market town"
"plow blade maker or user"
"modern coined name, son of Bray"
"dark, dark-haired"
Similar sound: These names share phonetic patterns with Cannon — 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 Cannon.
Rhythm: Cannon is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.