Leonard F. Hewitt Sr., 51, and Krystyn Anne Smock, 40, both of Bristol Township, committed the acts for more than four years from January 2014 to October 2019, according to officials.
One of the victims came forward in January 2020, leading to their arrests shortly after, the release states.
During the investigation over forty videotapes documenting the abuse were found, according to the release.
All of the children were under the age of 13 at the time of the abuse, according to the DA.
Hewitt was sentenced to 20 to 40 years in state prison and Smock was sentenced to 15 to 30 years in state prison, according to the district attorney.
Both will be required to register as sex offenders for the rest of their lives, per state law.
Click here to read the full statement from the district attorney's office.
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