June 27, 1974- Birth of Christopher O'Neill, husband of Princess Madeleine, Duchess of Hälsingland and Gästrikland, a daughter of King Carl XVI Gustaf of Sweden.
Chris O'Neill was born to Paul O'Neill, an American investment banker and Eva Maria O'Neill (née Walter), whose stepfather is a cousin of Cardinal Michael von Faulhaber. O'Neill has two half-sisters on his mother's side and three on his father's side. He grew up in London, St. Gallen, Austria and Germany, and holds dual American and British citizenship.
He was educated at Eaton House and Westminster Under School in London, Institut auf dem Rosenberg in St. Gallen, Switzerland, and graduated with a BA degree in International Relations from Boston University. He also obtained an MBA from Columbia Business School in New York City. He was a Partner and Head of Research at Noster Capital and former employee of NM Rothschild and Sons and Steinberg Asset Management. His marriage to a Swedish princess necessitated that, if he continued with Noster Capital, the fund would have to divest entirely from companies that traded on the Stockholm Stock Exchange and, moreover, divest from any company which had more than a third of its sales in Sweden. O'Neill resigned from Noster Capital in consequence of these demands.
O'Neill and Princess Madeleine announced their engagement on 25 October 2012, and wed on 8 June 2013 at the Royal Chapel, Stockholm Palace, and be followed by dinner at the Swedish Royal Family's residence, Drottningholm Palace.
Unlike his brother-in-law Prince Daniel and his sister-in-law Princess Sofia, O'Neill is untitled and undertakes no royal duties, since members of the Swedish Royal Family must hold Swedish citizenship, which O'Neill has declined. The Royal Court refers to him in Swedish as Herr Christopher O'Neill, a form of title which is not normally used (it would normally be herr). Thus, remaining a private citizen, he can continue his career in finance. The couple have three children.