Blair v. Blair
Missouri Court of Appeals
147 S.W.3d 882 (2004)
Nancy Blair (defendant) had a one-night stand with William Blair (plaintiff) while she was married to someone else, and conceived a son, Devin. Years later she told William that Devin was his son; the two resumed a relationship, had a daughter together, and married after her divorce was finalized. William adopted both children. When Nancy later filed for divorce, William cross-petitioned for an annulment, claiming Nancy's lie about Devin's paternity had fraudulently induced him to marry her. He testified he would not have married her without the lie, but admitted he had fallen in love with her. The trial court denied the annulment, and William appealed.
Whether a marriage is voidable for fraud when the wife falsely told the husband before marriage that he had fathered her son, and he later fell in love with her, had a child with her, married her, and adopted both children.