His full name is Eric Miller Costello, they also went by Eric and Ericka.

He was convicted of "fraud using an access device" when he was 19 years old.
https://www.justice.gov/archive/usao...january12.html

Here are their Facebooks, not much there but hers has photos of the children.

https://m.facebook.com/miller.costello

https://m.facebook.com/ericka.emile