oh but I love Jameson! if its pronounced Jamie sun. (:
And Echoe is unique too but I’d get rid of the e at the end.. :s

BOYS
____

Ryder – this will be my future sons name..very manly yet adorable, no? (:
Kyler – cute name, middle name could be Emerson, its catchy together. (:
hunter – another cute name, haha. I love the first 3 names the most!
Taylon – original, no? (;
Tayden – Not much people like this name and its not used much..its cute!
Ace – Sexy name, haha. (:
Jett – this name was just cute to me somehow. kind of preppy though.
Blaise – pronounced blaze. I thought it was pretty unique and cute. (:

GIRLS
_____

nobie – NO ONE has this name, i think. I find it very adorable. (no-bee)
Asya – pronounced Asia. My uncle mario named his child this. R.I.P
Ash – super cute for a girl, could be used as a boys name though (:
Dawn – It has a catch to it..dont you think?
Ivory – SUPER ADORABLE! I came up with this and nobie by myself. xD
Odette – old fashioned, not liked much but i LOVE it.
Skye – ???
Rue – not so sure about this name either…

BOTH
_____
Averry – i think this name is one of the cutest names ever!!!!!!
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Here are some more and its meaning too..
Kim- chief, ruler-comes from english
Emma- industrious-comes from German
Elena- light-comes from greek and Italy
Chloe- blooming-comes from greek

Blade- knife and sword-comes from English
Jabari- fearless and brave-comes from Swahili
Rick-rich and powerful ruler-comes from English
Kevin- Handsome-comes from Irish

I hope that helps
I don’t know what else but i prefer Elena for girl and Kevin for boy.
References :

i think that if she has a boy, she should name him:
Jameson Alan

for the girl name, Echoe, im sorry but i dont like it. just being honest.

how about something like a combo of some of the above names like::
Kaitlyn Marie (its a lot like kathryn…and using marie)
the good thing about Kaitlyn is that you can use Kate, Katie, or Lynn as a nickname.

here are some girl names that i like…you may not like them but they are just some suggestions.

-Kaitlynn Marie (i like the double "N" but because the moms name i chose one "N" on the other name)

-Kiera Lynn (pronounced Keer-ah)

-Lillian Grace (nickname Lilly)

-Brianna Paige (pronounced bre-auna…not bre-anna)

-Hailey Rose

-Sierra Jo

good luck to your sister & congrats on being an aunt
hope i helped.
References :

Whatever name you decide on put Grandpa in front of it for a boy and Grandma in front of it for a girl. Reason is, they will one day be old and have that moniker in front of their names. So the sillier it sounds the dumber it will be when they grow up. I met a couple the other day who named their son Ocean. He will be Grandpa Ocean how do you think he will feel at 75 being called Ocean?

A child’s name sets them up for life. It sets them up for ridicule from other class mates and teased terribly. Kids can be very cruel. Parents need to really think hard when they give some off the wall unique name to their child. They will grow up someday and be a grown up with that silly name!!

Hope I helped you out.
References :
married with grown kids

Boy:
Seth
Noah
McClendon
Grayson
References :