Marrying By Suppressing Fact

A man (X) married a woman (Y) by suppressing the fact that he was married and divorced earlier. Before marriage, the woman's family had this suspicion but the man himself, the man's family and relatives, even though they know about his earlier marriage and divorce, lied to the woman and woman's family that he was not married / divorced earlier. Now the woman's father (Z) has procured the man's (X) earlier marriage certificate, divorce order and divorce decree from a family court. He (Z) did not tell his daughter yet about this as his daughter (Y) is believing her husband (X) blindly like a sheep and she (Y) may argue that these documents are fabricated by her father (Z). Before marrying this man (X), his daughter (Y) accused her family that they are making baseless allegations about the marital status of this man (X). So what are the legal options before this father (Z).