(b) being a parent, guardian or other person obligated to make child support payments by an order of child support entered by a court of competent jurisdiction for a child less than eighteen years old, he or she fails or refuses without lawful excuse to provide support for such child when he or she is able to do so; and 2. he or she has previously been convicted in the preceding five years of a crime defined in section 260.05 of this article or a crime defined by the provisions of this section. Non-support of a child in the first degree is a class E felony.