AirForceWife&MommyX4:Xavier Thomas
Xavier David
Xavier Scott (my favorite I think)
Xavier Allen
I like all of Joy's suggestions. Plus..how about Xavier Martin, Xavier James, Xavier Edward, Xavier Ryan, Xavier Andrew, Xavier Charles, Xavier John, Xavier Matthew, Xavier Paul?
For a girl's name, do you have a certain preference (like something unisex, really girly..etc?). There are TONS of names I came up with that sounds good with your DCs' names, but I don't want to write a huge list!

Proud auntie to..
P born November 18, 2000
E born May 30, 2003
D born December 1, 2004
N born September 5, 2006
M born June 3, 2008
D born June 27, 2008
Y born July 19, 2008
G born November 2, 2009
C born November 26, 2010

E & F born October 9, 2011
A born October 24, 2011
D born September 5, 2012
-newest of em all-S born November 11, 2012