I love the sibset, though I think boy-girl twins named Amos and Mira would be a little creepy, given the history. ;0)
One question: I see Mira is from Elmira. I used to live not far from Elmira, NY and I have a co-worker with the name, both pronounced el-MY-ra. Do you know if your relative pronounced Mira as MEER-ah or MY-ra? I do like the sound of Amos and MEER-ah together. Amos and MY-ra, not as much.