May 23, 1844 – November 28, 1921
Sir `Abdu'l-Bahá `Abbás Effendí (23 May 1844 – 28 November 1921), commonly known as `Abdu'l-Bahá (abdol-ba-haa), was the son of Bahá'u'lláh, the Prophet-Founder of the Bahá'í Faith. In 1892, `Abdu'l-Bahá was appointed in his father's Will to be his successor and head of the Bahá'í Faith. His Journeys to the West, and his Tablets of the Divine Plan spread the Bahá'í message beyond its Persian roots, and his Will and Testament laid the foundation for the current Bahá'í administrative order.