Does the marriage contract become void if the husband discovers after one year that his wife lied about her name and lineage, and that her guardian did not mention her true name during the contract?

The marriage is valid even if there was an error or forgery in the wife's name, because identification is the essential condition. What the girl did by impersonating a name is forbidden by Islamic law and is considered a major sin. She must repent, correct her name, and be truthful in her speech.