Ok so Sebastian Thomas is definitely the boy name thanks to everyone's help :) for Paisley this is what we're down to:
I really like the name Paige, which would go with any of your boys' names and is close to Paisley but a little less common
I like the pp's suggestion of Paige, which is more classic than Paisley. Another suggestion is Emmeline for a first name, instead of Emily.
For Paisley, I really love Paisley June as a combo.
Paisley Elizabeth - I like this combination of sweet and spunky with traditional
Paisley Eleanor - I always love Eleanor so you will probably never here this again - I don't think I like it with Paisley. Awkward sounding to me.
Paisley Jane - Very cute but not sure about the repetition of the long "A" sound. I want to like it but can't.
Paisley June - AH! This may have to be my favorite. June is much nicer than Jane with Paisley.
Paisley Annabelle - Too darn sweet for my taste. Off to suck on a lemon.
So, middle name for Paisley choice #1 is June and #2 is Elizabeth
Sebastian Thomas is a very handsome name.
Paisley Elizabeth is the most striking combo imo, of your narrowed down list.
Has anyone suggested Paisley Beatrice?
@bonnielyn Paisley June and Paisley Elizabeth were mine and my husbands favorites. The others were ones that people had suggested that I thought flowed well.
@lilysong no one has suggested Beatrice as a middle name yet and although it goes with Paisley I've never really liked the name Beatrice.