Ozzy Osbourne is set to be a granddaddy once more, as his son Jack is expecting a baby with his new fiancee, actress Lisa Stelly. The son of the Prince of Darkness revealed the news during an appearance this evening (Oct. 11) on 'Piers Morgan Tonight.'

"I'm excited," Jack told Morgan, adding, "I'm a little nervous." Jack and Lisa only announced their engagement a few weeks ago. At the time, Lisa tweeted, "The most amazing man I've ever met asked me to marry him ... and he wasn't joking!"

Ozzy already has four grandchildren -- two (Isabelle and Harry) from his daughter Jessica and two more (Mia and Elijah) from his son Louis.

In the same episode of 'Piers Morgan Tonight,' Ozzy's wife Sharon talked about how the rocker's abusive behavior nearly cost them their marriage.

"It's frightening," she divulged. "As hard as Ozzy would hit me, I would clobber him back. If ever he went to hit me, I would just go right back for him."

She continued, "That one time, when Ozzy was arrested we were parted for three months...by the third month, it's like, 'we can make it work.'"