When was English football manager, who managed West Ham United from May 2011 to May 2015, known as "Big Sam" born?
West Ham United F.C. managers:  The most recent manager before that was Sam Allardyce who was appointed in May 2011 and left the club in May 2015. Sam Allardyce: Samuel Allardyce ( ; born 19 October 1954), known as "Big Sam", is an English football manager and former professional player, who most recently managed Crystal Palace from December 2016 to May 2017.
i don't know