Sonny Bill Williams has been reunited with his young family after yet another code-hopping, country-crossing shift.

The 29-year-old star has been joined in Hamilton by wife Alana Raffie and 8-week-old Imaan, who is pictured here for the first time.

Photos on social media show Williams, 29, taking Imaan for a walk in a pram and a montage shows children of the Williams clan.

Williams told the Herald this week that he had been missing his family like "crazy" while they were in Sydney.

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He said the Chiefs had set them up with a home. "It's a really chilled-out environment and obviously being a new father it's an awesome place for me and my wife to start a new life with a little one."

And he even enjoyed the dreaded sleepless nights.

"Sometimes I love it when you hear a funny noise in the middle of the night and you jump up and make sure they are still breathing.

"Life is a beautiful thing and I've definitely been blessed to have a child and I just want to be the best father I can."

Family and friends have been making the young parents feel at home. Williams' sister Niall wrote: "Quick stop in to see my beautiful niece Imaan before heading to whakatane for touch ... "

Williams said having a child had made him more determined to do well in boxing and rugby to provide for his family.

He has a huge year ahead: a third season with the Chiefs' Super Rugby side and then a tilt at helping the All Blacks become the first back-to-back Rugby World Cup-winning team.

Before that, he will fight American Chauncy Welliver in his seventh professional fight.

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