Baby is overdue and we're stuck for middle names!! Can you help suggest a couple of middle names each (if you can think of more than one for each!) for our top 3 choices of first names?

In alphabetical order

Boys :
Layne
Nathaniel
Vincent

Girls:
Amelia
Elizabeth
Nyssa (the 'y' has an 'i' sound like Nissan without the 'n')

Thank you in advance!!