Hugh Grant and Anna Elisabet Eberstein are parents of a baby boy born in September 2012

Hugh Grant reportedly had a third child from a relationship with Swedish TV producer Anna Elisabet Eberstein, the Sun newspaper reports.

The actor also has a daughter, Tabitha, born in September 2011, and a son, Felix Chang, aged 13 months, born in December 2012, with former girlfriend Tinglan Hong.

His son with Eberstein was born in September 2012, just three months before the birth of Felix.

“They were pregnant with Hugh’s children at the same time. It’s an unusual arrangement,” a source told the newspaper.

Initially, Grant’s name was not written in the baby’s first birth certificate, as the space reserved for the father was reportedly left blank.

But when the document was re-registered in December 2013, the full name of the actor, Hugh John Mungo Grant, was revealed