Irena is a name commonly associated with various individuals and characters across different cultures. It is derived from the Greek word "eirene," meaning peace. The name has been popular in many countries, including Poland, Russia, and Greece, and can be found in various forms, such as Irena, Irina, and Iren. One notable figure named Irena is Irena Sendler, a Polish social worker who played a crucial role during World War II. She helped save approximately 2,500 Jewish children from the Nazi regime by smuggling them out of the Warsaw Ghetto and providing them with false identities. Her bravery and humanitarian efforts have made her a symbol of courage and compassion.