Saint Gregory the Illuminator is a significant figure in Armenian history, known for converting the Kingdom of Armenia to Christianity in the early 4th century. He is often regarded as the patron saint and the first official apostle of Armenia, playing a crucial role in establishing Christianity as the state religion. Gregory's efforts led to the construction of the first Armenian church, the Etchmiadzin Cathedral, which remains a central place of worship today. His life and work are celebrated in the Armenian Apostolic Church, and he is remembered for his dedication to spreading the Christian faith throughout the region.