Rusty Yates, the father of five slain children, has a son with his new wife.
Yates on Sunday told KHOU television in Houston that his wife, Laura, recently gave birth to a "healthy boy." Further details were not immediately available.
The couple wed in March 2006.
Rusty Yates divorced Andrea Yates in March 2005.
Defense attorney George Parnham told KTRK-TV that Andrea Yates is aware of her ex-husband's new child, "is at peace with the issue" and her position is that life goes on.