John T. Costin was a Republican Party organizer, a member of the Georgia Legislature, and a minister in Georgia, United States, during the Reconstruction Era (1863 or 1865 - 1877).
[1] Costin helped form the Republican Party of Georgia [2] He met with U.S. President Abraham Lincoln.
[3][4] Costin was a freemason[5][6] and held the title of Grand Master (Masonic).
[7] Costin was described as a scion of one of Washington's most illustrious families.
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