(I actually don't have much on these two, so feel free to give any headcanons you have!)

Child #1:

Name: Amethyst Star (AKA Sparkler)
Gender: Female
Age: 21
Species: Unicorn
I personally ship them with: Nopony at the moment
Additional Things:

Child #2:

Name: Dinky Doo
Gender: Female
Age: 15
Species: Unicorn
I personally ship them with: Iridescence
Additional Things: