Boy name. Help!

Mallory • 29, Married 3/9/11, Cohen 8/4/13, Baby Boy #2 28/12/15, Psych Nurse
My husband and I are hung up on these two names. I think we prefer Asher, however Dashiel (Dash) seems to fit better with our last name. Last names starting will a vowel are difficult as everything sounds like all one word. 

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