When Jacob Murphy crossed the white line at Carrow Road to make his debut in senior football, he could hardly have hoped for a more familiar face waiting to wish him luck.

There to make way for the 79th-minute substitute was twin brother Josh, who himself was making just his sixth appearance for the Canaries.

Jacob's 11-minute cameo meant that the 18-year-old twins joined the ranks of siblings who, whether through fraternal rivalry or brotherly love, have spurred each other on to reach the top of their professions.

The family connection is particularly strong at City, with the Murphys continuing a tradition begun by Rowland and Jack Palmer, who turned out for the club in 1902.

Until the Murphys' emergence, Ryan and Rossi Jarvis, from Fakenham, were the last brothers to appear for the Canaries, racking up more than 30 appearances between them up until 2008.

Beyond football, Norfolk has had its fair share of sibling success, with the brotherly torch currently being carried by England and British Lions rugby union stars Tom and Ben Youngs.

Their part in the success of the Lions' tour of South Africa last year saw them dubbed the 'farm boys' by the national press, having grown up on a farm in Aylsham run by father, Nick, himself a former England international scrum-half.

Outside Norfolk, sibling rivalries have proven to be a fascinating sideshow in international sport. Despite their differences in temperament and style, Jack and Bobby Charlton were the first pair of brothers to shine on the international stage for English football, lifting the World Cup in 1966.

The most famous sisters in sport, Venus and Serena Williams, have dominated women's tennis for almost two decades since Serena's debut in 1994, collecting 102 tour titles and $82m between them.

In cricket, Australian stars Steve and Mark Waugh put bowlers to the sword through the 1990s and 2000s, while Ben and Adam Hollioake played for England during the 1990s and early 2000s up until Ben's tragic death in a car accident in 2002.

But possibly the ultimate case of sibling success comes courtesy of the Sutter family, from Canada.

The Alberta family produced six brothers to play at the top level of ice hockey during the 1970s and 1980s – Brent, Brian, Darryl, Duane, Rich and Ron.