Actor George Clooney's cousin Miguel Ferrer says his family was all "surprised" to learn he had got engaged to Amal Alamuddin.

The "Monuments Men" actor, who once declared he would never marry again, proposed to the lawyer in April, and his relatives were as shocked as his fans about the news, reports contactmusic.com.

"At first the family was surprised to learn the happy (engagement) news," Ferrer was quoted as saying by Tele Star magazine.

The wedding is expected to take place in September.

" don't know if I can tell you a lot about this marriage. Obviously I'll be there," he said.

Clooney was previously married to Talia Balsam from 1989 to 1993.