Child Protective Services filed petitions detailing alleged involvement in underage marriages by the children's fathers or stepfathers, submitting sect marriage documents, notes from suspected underage brides, photos and journal entries from jailed sect leader Warren Jeffs.
Texas District Judge Barbara Walther will hold hearings on the six girls and two boys on Sept. 25 in San Angelo. In the meantime, the children will be allowed to remain with their mothers, said CPS spokeswoman Marleigh Meisner.
Two of the girls are daughters of Lloyd Hammon Barlow, a doctor who has been indicted on three misdemeanor counts of failing to report child abuse, according to court filings.
The other children are related to men, by blood or marriage, accused by child welfare authorities of participating in or blessing underage marriages, though the men are not under indictment.
The children range in age from 5 to 17. None currently live at the Yearning For Zion Ranch in Eldorado.
CPS has continued its investigation of the 440 children taken from the ranch run by the Fundamentalist Church of Jesus Christ of Latter Day Saints in Eldorado since the Texas Supreme Court ruled in late May that the children should not have been swept into foster care under a blanket petition and hearing. The court said evidence showed no more than a handful of girls were abused or were at risk of abuse.
Walther had initially ordered all the children taken from the FLDS parents placed in foster care after CPS said the girls were being forced into underage marriages and sex, and the boys were being groomed to be adult perpetrators.
An appeals court and the state Supreme Court rejected the reasoning, but the rulings did not preclude CPS from continuing individual investigations or requiring the parents to undergo parenting classes, which Walther ordered.
CPS asked mothers of girls ages 10-17 to sign safety plans to protect children from sexual abuse. For children who lived in a home with a man who married underage girls or agreed to an arranged marriage of an underage daughter, the plans included a requirement to keep the children away from the man.
Four mothers have refused. CPS said they are:
Barlow told an investigator he had delivered children to underage girls at the YFZ Ranch and elsewhere "many times" without reporting the deliveries to authorities, the affidavit said.
The girl twisted her face in disgust when asked whether a 13-year-old who married a 40-year-old man and had a baby would be considered sexually abused.
"The marriages are pure," the girl told caseworker Ruby Gutierrez.
The girl, according to Gutierrez's affidavit, went on to say "that this can't be a crime because Heavenly Father is the one that tells (jailed FLDS leader Warren Jeffs) when a girl is ready to get married and that he is only following the word of Heavenly Father."
The woman, an accountant who moved to San Antonio after the raid, refused to sign the safety plan, telling a caseworker she felt it was "an insult to commonsense."
Messages left for the attorneys of the women and for FLDS spokesmen were not immediately returned Tuesday. The Associated Press is not identifying the women to avoid inadvertently identifying the children, who authorities say could be abuse victims.
In addition to filing for custody of the eight children, CPS also requested that cases involving 32 other children be dropped after CPS found no evidence of underage marriages or the families agreed to take appropriate actions to protect the children.
The remaining 400 cases are still under investigation.
The child welfare cases are separate from criminal cases brought last month against six sect members. Five, including Jeffs, are accused of sexual assault against a child. One of the five also faces an additional charge of bigamy, while the physician faces the three misdemeanor counts for failing to report abuse.
Jeffs, already convicted in Utah as an accomplice to rape, awaits trial in Arizona on charges of being an accomplice to sexual contact with a minor - all stemming from alleged underage marriages within the sect.
Under Texas law, a girl younger than 17 cannot generally consent to sex with an adult.
The state's bigamy statute applies to legal marriages and to couples who purport to marry, a lower standard adopted in part to target unions like the spiritual marriages practiced by FLDS members.
The FLDS, which believes polygamy brings glory in heaven, is a breakaway sect of the mainstream Mormon church, the Church of Jesus Christ of Latter-day Saints, which officially renounced polygamy more than a century ago and has sought to distance itself from the FLDS.