Jason Momoa and Lisa Bonet have officially married.

The couple - who have children Lola, 10, and Nakoa-Wolf, eight, together - were widely believed to have tied the knot in November 2007, but it has now emerged they didn't legally wed until last month.

A source said: ''Jason Momoa and Lisa Bonet had an official wedding a few weeks ago at their house in Topanga, California.

''Apparently they weren't officially married until then! They said they 'made it official.' ''

Another insider confirmed to Us Weekly magazine that the 'Justice League' actor and the 49-year-old beauty purchased a marriage license from the Los Angeles County Registrar-Recorder/County Clerk's office on 2 October, a week before they got hitched.

Guests at the wedding included Alicia Vikander, Michael Fassbender, rock climber Chris Sharma, Lisa's daughter Zoe Kravitz - who she has with ex-husband Lenny Kravitz - and a number of the 38-year-old actor's former co-stars.

The source said: ''He stays close with the people he works with on movies and is a really nice guy.

''It was a big party and people came from out of town to attend.''

The former 'Game of Thrones' star is said to have worn an unbuttoned white shirt and a lei, with his long hair tied in a bun, while Lisa ''looked beautiful'' in her own outfit.

Some of the guests performed a traditional Māori haka for the bride.

The couple met through mutual friends in 2005 but Jason previously admitted he had ''stalked'' Lisa because he'd had a crush on her since seeing her in 'The Cosby Show' when he was younger.

He previously said: ''The first time [we met] I was like, 'I want that one. I want her. I'm going to get her.

''I didn't tell her until after we had our two children. But I told her ... 'I kind of stalked you. I was going to find you.' ''