News Mark-Paul Gosselaar & Wife Expecting a Child By Raphael Chestang 6:14 PM PDT, March 11, 2013 Getty Images It's a hat trick for actor Mark-Paul Gosselaar, as his wife Catriona McGinn is pregnant. PICS: Celebs and Their Cute Kids! While this is the couple's first child together, this marks baby number three for Gosselaar, 39, who already has a six-year-old daughter and nine-year-old son from a previous marriage.The Franklin & Bash star's rep exclusively told People that the couple is "thrilled" to announce the news. Gosselaar, 39, and McGinn wed in July. The latest edition to the Gosselaar-McGinn household is expected to be born in September.