Mel Gibson's wife, Robyn Moore, has filed for divorce from the actor/director after nearly 30 years of marriage. Robyn cited "irreconcilable differences" as the reason for their separation, in legal documents filed in LA on April 13. "Throughout our marriage and separation we have always strived to maintain the privacy and integrity of our family and will continue to do so," they said in a joint statement. The couple, who married in 1980, have seven children - Hannah, Edward, Christian, William, Louis, Milo and Thomas. According to the legal papers, Robyn is asking for spousal support as well as joint physical and legal custody of their youngest son, Thomas, the couple's lone minor child.