Hartford sits next to 4 phonetic neighbors — Harford, Hertford, and Harlow are the closest matches by sound. Most share Hartford's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"ford of the hart (stag); deer crossing"
"my brother is a gift"
"beautiful"
"Christmas birth"
"noble disposition"
"grey lake, misty pool"
"Possibly derived from Hawaiian lani (sky, heaven, heavenly) combine..."
"honey, sweetness"
Similar sound: These names share phonetic patterns with Hartford — 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 Hartford.
Rhythm: Hartford is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.