Olof Daniel Westling was born to Olle and Ewa Westling (born Ewa Westring) at Örebro Hospital in Örebro, Sweden, on 15 September 1973, the day Carl XVI Gustaf ascended the Swedish throne. Victoria, Crown Princess of Sweden, Duchess of Västergötland, was born in Stockholm on 14 July 1977 and is the heir apparent to the Swedish throne, as the eldest child of King Carl XVI Gustaf.

Daniel started his own company in 1997 and worked as a consultant in the fitness industry. He then ran his own gym, “Master Training”, together with a colleague. “Master Training” expanded and has two gyms in central Stockholm. In 2006, he started the fitness company/gym named “Balance”, also situated in central Stockholm.

Victoria and Daniel met after a training session at the then Daniel Westling's fitness center in the mid 2000s. After a long romance, the Crown Princess and Daniel Westling announced their engagement on Tuesday 24 February 2009, and the wedding took place on 19 June 2010 at Stockholm Cathedral. After the wedding, Westling acquired Victoria's ducal title, becoming a Swedish prince and Duke of Västergötland. He is addressed as HRH Prince Daniel.

They have two children, Princess Estelle, born on 23 February 2012 and Prince Oscar, born on 2 March 2016.

More Info: en.wikipedia.org