Article continues below advertisementMatthew WelchSource: MEGACatherine O'Hara and Bo Welch welcomed two children during their marriage.Even offscreen, Catherine O'Hara was a beloved mom-of-two.The Home Alone actress became a first-time mom when she and her husband, Bo Welch, welcomed Matthew Welch in 1994, two years after their 1992 nuptials. Matthew made his red carpet debut when his parents brought him to the opening party for Tim Burton's photo exhibit, The Museum of Unnatural History, in Hollywood in October 1994.