Hello! My husband and I are expecting our first child. We’re all set on boy names, but the only girl names we agree on are [name]Roan[/name] and [name]Vivian[/name] (both are family names, [name]Roan[/name] being my maiden name). Our last name is 2 syllables and also ends with an “n” sound, so we are hoping for a more feminine middle name.
Please help us 
pretty, pretty please!
[name]Welcome[/name] to Nameberry
[name]Vivian[/name] is a great start, and I think [name]Roan[/name] would make a lovely and meaningful middle name (perhaps not a first name, as you said your last name is also 2 syllables, and also ends in an “n” sound, like [name]Roan[/name]).
Are there any other names you like? It would help gear peoples’ suggestions towards your style. However, here are some ideas for you anyway:
[name]Cecelia[/name]
[name]Meredith[/name]
[name]Lillian[/name]
[name]Elisabeth[/name]
[name]Eliza[/name]
[name]Fiona[/name]
[name]Charlotte[/name]
[name]Naomi[/name]
[name]Julia[/name] or [name]Juliet[/name]
[name]Lucy[/name]
[name]Amelia[/name]
[name]Stella[/name]
[name]Victoria[/name]
[name]Josephine[/name]
[name]Cassandra[/name]
[name]Maisie[/name]
[name]Annabel[/name]
[name]Audrey[/name]
Evelyn
A few Combinations:
[name]Cassandra[/name] [name]Roan[/name]
[name]Eliza[/name] [name]Vivian[/name]
[name]Vivian[/name] [name]Fiona[/name]
[name]Julia[/name] [name]Roan[/name]
[name]Roan[/name] [name]Elisabeth[/name]
[name]Cecelia[/name] [name]Vivian[/name]
[name]Lucy[/name] [name]Vivian[/name] [name]Roan[/name]
[name]Vivian[/name] [name]Naomi[/name]
[name]Charlotte[/name] [name]Roan[/name]
[name]Vivian[/name] [name]Juliet[/name]
[name]Roan[/name] [name]Stella[/name]
I hope this helps a little! Good luck!