No. Sarah Ann Bright was married to Thomas Gray, the son of Ebenezer Gray. I believe your Joseph and my Sarah Ann were brother and sister. They were, then, both children of Priscilla Bright, who, in my estimation, was married previously to an Ebenezer Bright and apparently divorced by the time of the 1850 census.
In that census, Priscilla and her children, including the Joseph Bright you're interested in, were living next door to Thomas and Sarah Ann (Bright) Gray. Besides the proximity, Priscilla's household also included Thomas Gray's younger brother. Ebenezer Bright still lived in Switzerland County, but in a different township with a new wife and young son.
In 1840, Ebenezer Bright was next door to Ebenezer Gray and Joseph Gray (Ebenezer Gray's father) for the census. If Ebenezer Bright and Priscilla were divorced sometime between 1840 and 1850, then it makes sense that she got the house in Switzerland County's Craig Township. Thomas Gray, married to Sarah Ann Bright, took over his parent's house next door as Ebenezer Gray died in 1841. Thus, it makes sense that Thomas Gray, married to Sarah Ann Bright, and Priscilla Bright, apparently divorced from Ebenezer Bright, were next door neighbors for the 1850 census.