i LOVE Peyton and Dominic (you could nick name him Dom)i also like Peyton spelt Payton.
middle names
Peyton Rose
Peyton Kate
Peyton Maree
Peyton Jessica
Peyton Joy
Peyton Anne

hope i helped

sorry, forgot middle names for DOminic
Dominic James
Dominic Ryan
Dominic Jake
Dominic Jai
Dominic Brock
DOminic Casey

hope i helped

i vote for Declan or Adrianna... how will you pronounce Adrianna?

I think Adrianna or Declan go best with Tristan.

Cailen Marissa is a wonderful names for a pretty girl.
Dominic Jay is a good name for a boy.

Thank you for all the input! We really appreciate it! We've edited our lists a little, and decided that we want to stick to a gaelic/irish theme in our children's names. (Our first is Tristan Brennan.) We are definitely open to any name suggestions you might have!

Here are our current lists:
Boys...
Declan
Keagan
Caden (or Kaden... which spelling??)
Rylan
Aidan ... cute but i feel like it's too popular
Connor ... leaning towards this as more of a middle name

Girls...
Brea
Cailen
Keira
Cassidy
Norah

Thanks again for helping us out.