As well as being 16th in line to the throne Zara Tindall, formerly Zara Phillips, won a silver medal in equestrian at the London Olympics in 2012.
She is a patron of the New Zealand charity the CatWalk Trust which raises money for spinal chord injury research. The organisation was founded in 2005 by Kiwi equestrian rider Catriona Williams who became a tetraplegic after an accident in 2002.
Mike Tindall played England's national rugby team between 2000 and 2011.
He wed Zara, who is the daughter of Anne, Princess Royal, and her first husband, Captain Mark Phillips, at Canongate Kirk in Edinburgh on July 30, 2011.
While in New Zealand for the 2011 Rugby World Cup just months after their marriage, he was suspended from the team's elite player squad for throwing a dwarf on a night out in Queenstown.
He was fined £25,000 by the Rugby Football Union for the incident but had the penalty reduced to £15,000 on appeal.
Footage of Mike flirting with a mystery blonde woman at a bar in Queenstown also surfaced online while he was in the resort town during the competition.
A security guard was charged with accessing a computer system for a dishonest purpose for posting the video, which was captured on CCTV, to YouTube.