Louis Lynagh’s debut for Italy, almost 30 years after his father Michael made his last stand for the Wallabies, completes the second family double of the current Six Nations. Cai Evans, son of Ieuan, completed the first as a late substitute for Wales at Twickenham last month.
Some other fathers and sons capped by the same country: The Youngs’ of England (father Nick, sons Ben and Tom), the Farrells (father Andy, son Owen), the Lozowskis (father Rob, son Alex).
The Quinnells of Wales (father Derek, sons Scott and Craig), the Youngs (father Dai, son Thomas), the Moriartys (father Paul, son Ros...