18 baby names with a similar sound and feel to Treagan.
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"ditch farm, settlement by the ditch"
"beloved intimate friend"
"peaceful ruler"
"noble strength"
"gold, prosperity (variant interpretation)"
"home ruler"
"pledged to God"
"grace, favor"
"ocean, sea"
"fragrance, pleasant smell"
"dwelling place"
"life, living"
"Noble, patrician (via Patrick)"
"World ruler; mighty lord of the world"
"farm garden, upper estate enclosure"
"handsome, fair"
"dweller by the fair or pleasant riverbanks"
"modern American coinage combining melodic phonetic elements"