Mara sits next to 4 phonetic neighbors — Sara, Clara, and Maura are the closest matches by sound. Most share Mara's Irish-rooted cluster, so the rhythm and vowel shape carry across the list.
You searched for names like
"bitter"
"gem, jewel"
"Ceol's island, ship island"
"from Macey (Normandy place name)"
"crooked nose"
"light, bright one"
"member of the Gauts (Germanic tribe)"
"beautiful rose"
"famous warrior"
"little Laura"
"God is my oath"
"God is my judge"
"beloved, favored"
"dark, rich (possibly referring to the dark Adriatic waters)"
"precious gem"
"ruler of supernatural beings"
"precious stone"
"sea battle, sea fighter"
"to tie, to bind"
"Mary's gold, golden flower of Mary"
Similar sound: These names share phonetic patterns with Mara — similar vowel sounds, consonant clusters, or rhythm.
Shared roots: Several names on this list have Hebrew origins, giving them the same cultural heritage as Mara.
Rhythm: Mara is a 2-syllable name. Names with the same syllable count tend to feel interchangeable when you're narrowing your list.