Frank B. Butler was one of five sons born to Samuel W. Butler and Clarissa Boalt Butler. As a young man, Samuel settled in Venice, Ohio, where he operated a grist mill. Later, he moved to Sandusky, where he operated a large commission business. (See article 18 of Helen Hansen's book AT HOME IN EARLY SANDUSKY to read more about the Butler family and their former home on Wayne Street in Sandusky.)
For several years, Frank Butler worked as a cashier in his brother's business, George R. Butler & Co. The firm manufactured doors and sashes. Frank's brother John M. Butler married Sarah Cooke, a daughter of Civil War financier Jay Cooke. Frank was mentioned in the book entitled LETTERS HOME. During his service in the Civil War, Jay Caldwell Butler wrote letters home, and his son later compiled the letters written to and received by Jay Caldwell Butler. In his letters, Jay told of how he missed his brothers back at home in Sandusky.
After a lengthy illness, Frank B. Butler died in Manitou Springs, Colorado, on January 25, 1899. He had gone west in hope of improving his health. An obituary for Frank Butler, from the January 31, 1899 Sandusky Register. reported on Frank Butler's funeral: "The deceased was well and favorably known and many friends attended..." Rev. Claude Kelly conducted the funeral service, and burial was at Oakland Cemetery. Mrs. Anabel Butler died in 1912, and she is also buried at Oakland.