Most siblings to play in a rugby union international match

The most siblings to play in a rugby union international match is 5 and was achieved by Archie, Jack, Frank, George and Max Skofic (all Slovenia) playing for Slovenia against Bulgaria in the European Nations Cup Division Two match at Park Siska, Ljubljana, Slovenia on 12 April 2014. Archie, George and Frank Skofic started the game and played the full 80 minutes. Max Skofic entered after 25 minutes and scored 3 tries, while Jack Skofic entered after 77 minutes. All five brothers finished the game on the winning side as Slovenia defeated Bulgaria 43-17. George Skofic also scored a try while Frank Skofic kicked one conversion.