A paternity attorney is a person who practices family law, but not all family law attorneys are considered paternity attorneys. Establishing the child's father is very important in determining who is financially responsible for the child, who has custody of the child, and other legal matters related to the best interests of the child. You can search for a paternity attorney via online references.
Attorneys who oversee paternity-to-paternity legal matters may attempt to show that the man is the father of the child he is supposed to support. Just because a couple is married does not mean that the man gives birth to the woman's children. Father Law's question had to do with proving that his wife was right and that the children he had during the marriage were his offspring.
Under the justice systems of most countries, a husband is automatically considered the father of the child when a child is born to a married woman. If a couple dissolves the marriage, the court automatically orders the husband to financially support all children born to the wife during the marriage. The man must pass a paternity test to show that the child does not belong to him before the court acquits him of paying for the child's care.
The mother is concerned that the man she marries will try to tell her that the child does not belong to her, just so that she does not have to support the child.