Baby Boy or Girl Roomy-with-a-T, Sibling to Finnian

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Megan writes:

My husband and I have a 16 month old named Finnian.  We absolutely love his name and want to find one we love as much for his sibling due in February.   The gender is going to be a surprise, so we don't know if Finn will have a brother or sister.

Here's the thing,  I have a list of girl names picked out that my husband and I both really like.  I would be completely happy naming the baby any of them, so I'm not to worried on that account.  We are having no luck with boy names, however.
There aren't any family names that we would particularly like to use. We are Roman Catholic and prefer that the name have a saint associated with it, although my husband doesn't really like the style of Old Testament names. I would love a name that sounds good with Finnian, but not too "matchy" (like Kieran, Cian, Brendan, or Killian).
. 
Here are the names we've considered so far:

Peter Campion- I like Peter a lot, but don't love the nn Pete,  love the mn Campion, after Edmund Campion

Benedict- This one has gotten turned down because of the generally negative connotations of Eggs Benedict, Benedict Arnold, and the teasing potential in the ending (DH hates Benjamin so that's a no go

Leo- I really like this name, but is becoming much too popular for my taste.  I'm afraid of picking too trendy a name, because I was one of a what seems like a million Megans born in the late 80s

Blaise- I love this name, unusual but not unheard of.  DH really can't get on board with it, however

Beckett- I like this name a lot, but DH says only as a middle name.

Our last name sounds like "Roomy," but with a "T."
Can you and your readers give us some other boy name suggestions?

p.s. Here are the girl names we like to give you a better idea of our style : Genevieve (nn Evie), Bridget, Gwendolyn, and Mariel

Thanks so much,

I'm not Roman Catholic, but I have the Saints section of The Baby Name Wizard. Without knowing any of the stories behind the names, I'd pick out:

Aidric
Bertrand
Brogan
Colman
Cormac
Darius
Declan
Edmund
Elias
Felix
Ivan
Marek
Ronan
Sebastian
Silas
Xavier


If you like Blaise, I wonder if you'd like Blaine.

If you like Beckett and Benedict, I wonder if you'd like Bennett---perhaps with a saint's name as the middle name.

Would you want to consider Campion as the first name? Or using Edmund instead of (or in addition to) Campion?

Leo is somewhat more popular than Finn/Finnian (the Social Security Administration has Leo at #167 in 2011, near George, Alan, Maddox, Jonah, and Kenneth), but nowhere near the popularity of the name Megan---a Top 10 name in the 1980s. In 1985, there were over 20,000 new baby girls named Megan and another 4665 named Meghan; in 2011, there were 2226 new baby boys named Leo and 2631 named Leonardo. Even combining Leo and Leonardo and yet not counting Meagans and Meaghans and Megs (so, building up the Leos unfairly high, while reducing the Megans unfairly low), there were more than five times as many Megans per classroom in the 1980s than there are Leos per classroom now. My main hesitation about Leo would be not its popularity but rather that I think it's a little awkward with the surname.