Ending in -enna

Brenna is a feminine form of the Irish surname Brennan, or perhaps a variation of Brenda or Brendan—all of which have different meanings. Whatever its derivation or authenticity, it's a modern sounding name which has steadily decreased in popularity since 1995 when it peaked at Number 235 in the United States.

Made familiar by poet William Blake. According to Blake, after her death, Conwenna "shines ... over the north with pearly beams gorgeous and terrible". Make of that what you will.

The vintage Fenna, an old lady name making a comeback in the Netherlands, originates in Friesland in the northern part of the country, where the Fries language is spoken. Rhyming with Jenna, it's both rare and familiar and could conceivably enjoy wider usage in the English-speaking world as well. Fenna is a Top 50 girls' name in the Netherlands.

Honoring a male relative. Be bold and go with Glenn.