Gavin Henson and Charlotte Church
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"He was born just after midnight at her and Gavin's home with Gavin in attendance at the birth," it says in the posting.
No name has been announced, but, reads the blog, "we can confirm that he weighed in at 7 lb., 5 oz., and that mum and baby are both doing just fine."
"Here we go again!!!" Church, 22, and Henson, 26, said last June, when they announced her pregnancy.
The couple's first child, Ruby Megan Henson, was born in September 2007.
The Wales-born singer was first discovered on a British talent show – initially as a classical singer – before she made a name for herself in pop.
