Louis Lynagh, the son of former Australian rugby union great Michael, will make his debut for Italy in their Six Nations meeting with Scotland on Saturday in front of a sell-out near-70,000 crowd at Rome's Stadio Olimpico.
Lynagh was born in Italy and has played at Under-20 level for England where he grew up. He will play his club rugby in Italy next season, at Benetton for whom his father played. The 23-year-old currently plays for London club Harlequins.
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Michael Lynagh won 72 caps for Australia from 1984 to 1995, the last two years as captain, and was a Rugby World Cup winner in 1991.
Another son, Tom, 20, also born in Italy, plays for Queensland Reds and has represented the junior Wallabies.
Italy's head coach Gonzalo Quesada named Lynagh on the wing on Thursday. Tommaso Menoncello moves back to centre alongside Ignacio Brex.
Sebastian Negri returns after injury while prop Simone Ferrari is the only other change from last month's draw against France.
"He will be up against a great player (Scotland wing Duhan van der Merwe) but he plays and defends well, he's a good communicator and we're staying true to our philosophy of giving young players their chance," said Italy coach Quesada.
Scotland have made three changes. Andy Christie and backs Cameron Redpath and George Horne will start in Rome after coming off the bench in the 30-21 win over England. It will be a first international start for Saracens flanker Christie.
At Twickenham England will give winger Immanuel Feyi-Waboso his first start in their match against Ireland on Saturday, with Alex Mitchell and George Martin also returning as coach Steve Borthwick made three change
The Cardiff-born Feyi-Waboso, 21, scored a try as a replacement in the 30-21 defeat at Murrayfield two weeks ago and starts on the right wing, with Tommy Freeman switching to the left and Elliot Daly dropping to the bench. Danny Care is set to win his 100th cap off the bench.
Ireland welcome Hugo Keenan back from injury in an otherwise unchanged team.
With 15 points Ireland are six points clear and a bonus-point win would secure the title with a game to spare. Behind Andy Farrell's side are Scotland (9 points), England (8) and France (6), Wales (3) and Italy (3).
Italy (15-1): Ange Capuozzo; Louis Lynagh, Juan Ignacio Brex, Tommaso Menoncello, Monty Ioane; Paolo Garbisi, Martin Page-Relo; Ross Vintcent, Michele Lamaro (capt), Sebastian Negri; Federico Ruzza, Niccolo Cannon; Simone Ferrari, Giacomo Nicotera, Danilo Fischetti
Replacements: Gianmarco Lucchesi, Mirco Spagnolo, Giosue Zilocchi, Andrea Zambonin, Lorenzo Cannone, Stephen Varney, Leonardo Marin, Federico Mori
Scotland (15-1): Blair Kinghorn; Kyle Steyn, Huw Jones, Cameron Redpath, Duhan van der Merwe; Finn Russell (co-capt), George Horne; Jack Dempsey, Rory Darge (co-captain), Andy Christie; Scott Cummings, Grant Gilchrist; Zander Fagerson, George Turner, Pierre Schoeman
Replacements: Ewan Ashman, Alec Hepburn, Elliot Millar-Mills, Sam Skinner, Jamie Ritchie, Matt Fagerson, Ali Price, Kyle Rowe
England (15-1): George Furbank, Immanuel Feyi-Waboso, Henry Slade, Ollie Lawrence, Tommy Freeman; George Ford, Alex Mitchell; Ben Earl, Sam Underhill, Ollie Chessum; George Martin, Maro Itoje; Dan Cole, Jamie George (capt), Ellis Genge
Replacements: Theo Dan, Joe Marler, Will Stuart, Chandler Cunningham-South, Alex Dombrandt, Danny Care, Marcus Smith, Elliot Daly
Ireland (15-1): Hugo Keenan; Calvin Nash, Robbie Henshaw, Bundee Aki, James Lowe; Jack Crowley, Jamison Gibson-Park; Caelan Doris, Josh van der Flier, Peter O'Mahony (capt); Tadhg Beirne, Joe McCarthy; Tadhg Furlong, Dan Sheehan, Andrew Porter
Replacements: Ronan Kelleher, Cian Healy, Finlay Bealham, Iain Henderson, Ryan Baird, Jack Conan, Conor Murray, Ciaran Frawley
