Bobby Fitzgerald Lewis, sentenced to 80 years in prison by a Clay County jury in March 2011, faces trial in Wichita County on similar charges.
A jury was seated Monday, with testimony scheduled to begin Tuesday at 9 a.m.
Lewis was convicted on two counts of continuous sexual abuse of a young child and one count of aggravated sexual assault of a child for molesting three girls, ages 12-14, at his home in northwest Clay County, near the Wichita County line, from November 2008 through December 2009.
The children knew the offender.
Lewis is believed to have abused the same girls in Wichita County.
He was sentenced to 40 years for the first count and 30 years for the second count of continuous sexual abuse, and 10 years for the aggravated sexual assault charge. Judge Roger Towery of the 97th District Court ordered the sentences to be served consecutively.
March 17, the Second Court of Appeals in Fort Worth upheld the conviction.
He will be eligible for parole on the Clay County conviction in 2051.