Essex sits next to 4 phonetic neighbors — Essick, Weston, and Ajax are the closest matches by sound. Most share Essex's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"land of the East Saxons"
"belonging to God"
"heel, ankle"
"ancient, enduring"
"source, wellspring"
"one who delivers goods, agent"
"hot springs, warm wells"
"valley, dale"
"curly-haired"
"street"
"bridge town"
"to bind, captivate (from Rebecca root)"
"small holy man"
"lord, ruler"
"wished for child"
"youth, pup"
"Yahweh has shown favor"
"one who does not follow the herd"
"deep red, the color red"
"shadow, area of darkness"
"Yahweh has heard"
Similar sound: These names share phonetic patterns with Essex — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Old English origins, giving them the same cultural heritage as Essex.
Rhythm: Essex is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.