Michigan Addendum B to Verified Declaration About Paternity (Father's Name Unknown, but Whereabouts Unknown) is a legal form issued by the State of Michigan for use by an unmarried mother when the biological father is unknown, but the whereabouts of the father are not known. This form is used to establish legal paternity of a child and to allow the mother to receive certain financial benefits, such as child support. The form includes sections for providing information about the mother, the child, and the alleged father’s whereabouts, as well as a consent section for the mother and the alleged father. There are three types of Michigan Addendum B to Verified Declaration About Paternity (Father's Name Unknown, but Whereabouts Unknown): 1) Married Mother’s Addendum B: This form is used when the mother is married and the alleged father is not her husband. 2) Unmarried Mother’s Addendum B: This form is used when the mother is unmarried and the alleged father is not her partner. 3) Putative Father’s Addendum B: This form is used when the alleged father is willing to sign a consent to paternity and provide additional information about himself.