Martha sits next to 3 phonetic neighbors — Marta, Marsha, and Marlene are the closest matches by sound. Most share Martha's English-origin cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"mistress, lady of the house"
"modern musical creation"
"God is gracious, sun (possible alternate)"
"my God is Yahweh"
"holy peace, blessed reconciliation"
"helped by God"
"famous warrior"
"messenger"
"earth, speech, flow"
"crown of laurels"
"of royal status, kingly lineage"
"supplanter, one who grasps the heel"
"gift from God"
"she who brings happiness"
"place name: the Netherlands region"
"bright, shining one"
"counsel, decision"
"oak tree clearing"
"extraordinary wonder, divine act"
"dweller at the hall"
"fair and smooth"
Similar sound: These names share phonetic patterns with Martha — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Aramaic origins, giving them the same cultural heritage as Martha.
Rhythm: Martha is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.