Lauren, could this be the William H. Bright you are looking for? If so, I can give you more on his family.
Kentucky Biographies, Oldham Co. on Genweb. has a biography for William H. Bright. He was a doctor in Martinsburg, In. born in Oldham Co, Ky . It states the family went to Ky in 1812 and to In. in 1836. He grad. from Rush Medical College in Chicago. in 1865. He belonged to the Masonic Order. and was a staunch Republican. he was formerly a farmer. He is a leading man in the community.
1880 census: William H. BRIGHTSelfMMaleW48KYPhysicianMD--- Hester BRIGHTWifeMFemaleW38INKeeping HouseKYIN Flora A. BRIGHTDauSFemaleW14INSchoolKYIN Charles M. BRIGHTSonSMaleW12INSchoolKYIN Amelia L. BRIGHTDauSFemaleW10INSchoolKYIN William H. BRIGHTSonSMaleW8INSchoolKYIN John C. BRIGHTSonSMaleW6INSchoolKYIN Mary O. BRIGHTDauSFemaleW4INAt HomeKYIN Nancy B. BRIGHTDauSFemaleW2INAt HomeKYIN Source Information: Census Place Martinsburg, Washington, Indiana Family History Library Film1254321 NA Film NumberT9-0321 Page Number424A