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Butler was born in eastern Tennessee to William R. Butler, a [[physician]],<ref name=onlinebiographiesbio>[https://web.archive.org/web/20191201092248/http://www.onlinebiographies.info/or/butler-rr.htm Biography of Judge Robert R. Butler]. ''Online Biographies''. Retrieved December 3, 2021.</ref> and the former Rebecca Caroline Grayson. His paternal grandfather was [[Roderick R. Butler]], a colonel for the Union Army during the [[American Civil War]] who later became a U.S. representative from Tennessee's 1st congressional district during and after [[Reconstruction]]. The town he was born in had been renamed in Roderick R. Butler's honor.

Butler was born in eastern Tennessee to William R. Butler, a [[physician]],<ref name=onlinebiographiesbio>[https://web.archive.org/web/20191201092248/http://www.onlinebiographies.info/or/butler-rr.htm Biography of Judge Robert R. Butler]. ''Online Biographies''. Retrieved December 3, 2021.</ref> and the former Rebecca Caroline Grayson. His paternal grandfather was [[Roderick R. Butler]], a colonel for the Union Army during the [[American Civil War]] who later became a U.S. representative from Tennessee's 1st congressional district during and after [[Reconstruction]]. The town he was born in had been renamed in Roderick R. Butler's honor.

His mother also came from a distinguished family, as Butler's maternal grandfather J. W. Grayson had been colonel in the Union Army who held a command during the war.<ref name=onlinebiographiesbio/>

Rebecca C. Grayson, Butler's mother, also came from a distinguished family, as his maternal grandfather J. W. Grayson had been [[colonel]] in the Union Army who held a command during the war.<ref name=onlinebiographiesbio/>

==Political career==

==Political career==