SALEM, Mass. (AP) – The daughter of a man accused of isolating and abusing his family while sexually assaulting his daughters testified Friday that he repeatedly raped her at the family’s home over a period of years.

The now 21-year-old woman was the first witness in the Salem Superior Court trial of Patrick S. McMullen, 41, of Salisbury. He has pleaded innocent to multiple charges, including child rape and indecent assault.

“There were several different things, sometimes oral sex, attempting to have intercourse with me…just caressing me and touching me,” the witness said. “He basically just forced me to do it,” she said, by holding her arms, or pinning her down.

In her testimony, the daughter said some of the alleged assaults against her were witnessed by her brothers and sisters, and that her father told her not to tell her mother about the abuse.

Prosecutor Kathe Tuttman said in her opening statement that the family’s plight was disclosed after McMullen’s wife, Christine, sought a restraining order against him in May 2001.

“It was that event that set into motion a chain of events leading to these secrets beginning to come out,” Tuttman said.

She said those secrets were that McMullen was sexually abusing his three daughters, and physically and verbally abusing his wife and all six of their children.

Defense attorney Michael Phelan asked the jurors to keep an open mind.

“Don’t just take the shock charges that come before you at the beginning as per se the truth,” he said in his opening statement.

Other family members also were expected to testify in the trial, which is expected to last about a week.

The family lived in a commercial property on Route 1, surrounded by an eight-foot double fence that the three boys and three girls were not allowed to venture beyond, even to attend school. Police said the family was at times kept locked inside the home for months.

In 2001, Christine McMullen began venturing out to attend church, and apparently gained the support that led her to seek the restraining order.

McMullen listed his occupation as “entrepreneur” in court documents. Neighbors said they occasionally saw him selling used items in front of his property.