Munster and Ireland lock Donncha O'Callaghan has been handed a starting berth for his debut match for the Barbarians against an England XV at Twickenham on Sunday (kick-off 3pm, live Sky Sports 1).
Argentina's Juan Manuel Leguizamon will captain a Barbarians side brimming with household names against hosts England this weekend.
The Lyon flanker leads a matchday squad drawn from nine different nations with more than 700 international caps between them.
Munster lock Donncha O'Callaghan - making his first appearance in the black and white jersey - heads the squad cap count with 94 for Ireland and four Test appearances for the British & Irish Lions.
Ulster's Roger Wilson is also poised to make his Barbarians debut having been named among the replacements.
Head coach Dean Ryan has named a physical forward pack featuring powerful Georgia number 8 Mamuka Gorgodze, and an exciting backs division that includes New Zealand wings Joe Rokocoko (Bayonne) and Hosea Gear (Toulouse). Clermont Auvergne out-half Brock James is the only uncapped player in the line-up.
"Juan Manuel Leguizamon commands respect as a player, he's led the Pumas in Tests and he'll do an excellent job throughout this week and at Twickenham on Sunday," said Ryan.
"It's a privilege to work with such an experienced and talented group, and in the short time we've been together they've shown how committed they are to delivering a first-class performance.
"The Barbarians is a special entity in the way it brings together outstanding players from all corners of the rugby world but ultimately we have to deliver on the pitch and that is our aim."
There are two late changes to the squad with tighthead prop Davit Kubriashvili (Stade Francais) coming in for injured fellow Georgian Davit Zirakashvili (Clermont), while All Black Anthony Tuitavake (Montpellier) replaces Australia's James O'Connor (London Irish).
Tickets to England XV v Barbarians, priced from £25 for adults (£10 juniors), are available from Ticketmaster on 0844 847 2492 or from the RFU ticketing site.
BARBARIANS (v England XV): Juan Martin Hernandez (Racing Metro 92/Argentina); Joe Rokocoko (Bayonne/New Zealand), Rene Ranger (Montpellier/New Zealand), Benson Stanley (Clermont Auvergne/New Zealand), Hosea Gear (Toulouse/New Zealand); Brock James (Clermont Auvergne), Jimmy Cowan (Gloucester/New Zealand); Sona Taumalolo (Perpignan/Tonga), Ti'i Paulo (Clermont Auvergne/Samoa), Davit Kubriashvili (Stade Francais/Georgia), Donncha O'Callaghan (Munster/Ireland), Juandre Kruger (Racing Metro 92/South Africa), Juan Manuel Leguizamon (Lyon/Argentina) (capt), Alexandre Lapandry (Clermont Auvergne/France), Mamuka Gorgodze (Montpellier/Georgia).
Replacements: Andrew Hore (Maniototo/New Zealand), Julien Brugnaut (Racing Metro 92/France), Nahuel Lobo (Montpellier/Argentina), Joe Tekori (Toulouse/Samoa), Roger Wilson (Ulster/Ireland), Tomas Cubelli (Belgrano/Argentina), Francois Trinh-Duc (Montpellier/France), Anthony Tuitavake (Montpellier/New Zealand).
Head coach Nigel Carolan talks about the squad selection for next month's World Rugby Under-20 Championship in Manchester, while captain James Ryan is looking forward to leading the side against pool rivals Wales, New Zealand and Georgia.
Ireland Women's captain Niamh Briggs spoke about her excitement for the Women's Rugby World Cup as the official tournament logo was unveiled in UCD today. She is also looking forward to facing England, Canada and New Zealand in November this year as part of the build-up to #WRWC2017.
Ireland Women's Sevens captain Lucy Mulhall is in Langford this week for the Canada leg of the HSBC World Rugby Women's Sevens Series. Following Ireland's Bowl win in Atlanta, Lucy previews our prospects this weekend.
Ireland Women's Sevens captain Lucy Mulhall speaks about the build-up to the HSBC World Rugby Women's Sevens tournament in Atlanta, Georgia. The girls in green begin the pool stages against France at 12.52pm local time/5.52pm Irish time today.
IRFU High Performance Manager Colin McEntee reflects on the Easter matches played by the Ireland Under-18 and Under-19 teams, which ended last weekend with wins over the England Counties U-18s and France U-19s.
Watch highlights of the Ireland Under-18s' seven-try 43-0 victory over Scotland during the inaugural U-18 Five Nations Festival in Caerphilly, Wales. Number 8 and captain Caelan Doris scored a hat-trick of tries and winger Daniel Hurley bagged a brace.
Railway Union's Kim Flood made her debut at full-back for the Ireland Women in last weekend's 14-3 Six Nations win over Italy. She is looking forward to experiencing the partisan crowd at Donnybrook again this Sunday when Scotland are the visitors. Tickets are available from Ticketmaster.ie.
Ireland scrum coach Greg Feek spoke to Irish Rugby TV on the eve of the final round of the RBS 6 Nations Championship. He is happy that the team are focused but warns that it will be a tough encounter with Scotland tomorrow.
Looking forward to the lineout battle with Scotland, Ireland lock Devin Toner said: "We went well again Italy, I think our set piece went well. If we can just build on that and build on the positives then I think we'll be okay."