Lebanon, Northern Israel and their relatives in the diaspora, there are more than 1.8 million Greco-Melkite Christians residing in the Northern-MENA, the US, Canada and Latin America today, i.e., Greek Orthodox and Greek Catholic Christians under the ancient jurisdictional authority of the patriarchates of Antioch and Jerusalem ("Orthodox" in the narrow sense) or their Uniat offshoots ("Catholic" or "united" with Rome). Today, certain families are associated with descent from the early Jewish Christians of Antioch, Damascus, Judea, and Galilee. Some of those families carry surnames such as Youhanna (John), Hanania (Ananias), Sahyoun (Zion), Eliyya/Elias (Elijah), Chamoun/Shamoun (Simeon/Simon), Semaan/Simaan (Simeon/Simon), Menassa (Manasseh), Salamoun/Suleiman (Solomon), Youwakim (Joachim), Zakariya (Zacharias), [Kolath] and others. Contemporary movements In modern times, the term "Jewish Christian" is generally used in reference to ethnic Jews who have either converted to or been raised in Christianity. They are mostly members of Catholic, Protestant and Orthodox Christian congregations, and they are generally assimilated into the Christian mainstream, but they may also retain a strong sense of attachment to their Jewish identity. Some Jewish Christians also refer to themselves as "Hebrew Christians". The Hebrew Christian movement of the 19th century was an initiative which was largely led and integrated by Anglicans, and they included figures such as Michael Solomon Alexander, Bishop of Jerusalem 1842–1845; some figures, such as Joseph Frey, the founder of the London Society for Promoting Christianity amongst the Jews, were more assertive of their Jewish identity and independence. The 19th century saw at least 250,000 Jews convert to Christianity according to existing records of various societies. According to Data which was provided by the Pew Research Center, as of 2013, about 1.6 million adult American Jews identify themselves as Christians, and most of them identify themselves as Protestants. According to the same data, most of the Jews who identify themselves as some sort of Christian (1.6 million) were either raised as Jews or are Jews by ancestry. According to a 2012 study, 17% of Jews in Russia identify themselves as Christians. Messianic Judaism is a religious movement which incorporates elements of Judaism with the tenets of Christianity. Its adherents, many of whom are ethnically Jewish, worship in congregations which recite Hebrew prayers. They also baptize messianic believers who are of the age of accountability (able to accept Jesus as the Messiah), often observe kosher dietary laws and keep Saturday as the Sabbath. Additionally, they recognize the Christian New