DS is Lincoln! We also considered Thomas, John, Philip, Oscar, and Theodore. I think both Lincoln and Ethan flow well with Andrew. With one-syllable first names (which ours is as well) I think polysyllabic first names usually work better.
DD born 10/10/07 * DS born 11/25/11 * #3 due 3/9/2015
Blake is my fave of the names you listed, but I don't care for the alliteration with your LN and agree with PP that a 2+ syllable FN flows best. Since I don't like how the "an" in Ethan runs into the "An" in Andrew, I vote for Lincoln. It's also the trendiest of your choices since it's a surname as a FN, name of a president and ends in "n."
Warning
No formatter is installed for the format bbhtml
Re: Boy first name help
I like Blake and Lincoln best...
What about
Grant Andrew
Levi Andrew
Owen Andrew
Evan Andrew
Ryan Andrew
Luke/Lucas Andrew
Of the 3 you mentioned, I like Ethan best. But other thoughts:
Jacob Andrew
Justin Andrew
Patrick Andrew