GREEN BAY - The Catholic Diocese of Green Bay quietly revealed this week the name of another priest who sexually abused a minor, bringing the total to 47 priests with confirmed allegations against them.

The diocese in January disclosed 46 priests with "substantiated" allegations of sexual abuse of a minor over the past 112 years. The names are divided into two categories: Living priests who were determined to have abused minors and those credibly accused of multiple acts of abuse after they died, and those accused of a single substantiated incident after they died.

On Thursday, the diocese updated its list to include Raymond Hietpas, who abused a minor in 1964 while serving at St. Mary Catholic Church in De Pere. The allegation surfaced after Hietpas' death in 2000, according to the diocese.

Hietpas was not included in the original disclosure. The allegation against him was only recently substantiated "because of additional testimony by the victim," Rev. John Girotti, vicar for Canonical Services and associate moderator of the Curia, said in a statement.

Another priest, whose name the diocese initially withheld from the list, will not be identified. The diocese was still reviewing that priest's case in January after he challenged the publication of his name. The diocese's Independent Review Board recently completed its review and could not substantiate the allegation, the diocese announced Thursday.

RELATED: Green Bay diocese releases list of 46 priests it knows to have sexually abused minors since 1906

RELATED: Green Bay police chief: Come to us, not the diocese, if you've been abused

"The Independent Review Board (IRB) has recommended, after a further clarification of the facts, that the alleged abuse, which was reported to have occurred over 60 years ago, was unsubstantiated and that the name of the priest not be included on the disclosure list," the diocese said.

The revised list, which was not announced beyond an update to the diocese's website, also details new allegations against previously named priests. Four of them — Donald Rose, Walter Williams, Jerome Watry and Alphonse Wagner — are now confirmed to have multiple substantiated allegations against them. Each was initially reported to have a single substantiated incident of abuse.

Girotti said the updates to the list stem from accounts of additional survivors who came forward.

"From their brave testimony, we have been able to provide a fuller accounting of the number of victims, the dates abuse took place, and the names of the priests who harmed them," he said.

Peter Isely of Survivors Network for those Abused by Priests said the additions to the list raise more questions about the diocese's investigation.

"Are there other people who are going to be added? … What kept (Hietpas) off, and what’s now put him on?” he asked.

Green Bay's investigation followed a report by a Pennsylvania grand jury last year identifying hundreds of priests who are believed to have molested at least 1,000 children. It was also prompted by former Green Bay Bishop Robert Morneau's failure to report the sexual activities of Rev. David Boyea, who was convicted of molesting a boy in Brown County in 1985.

But the disclosure came after years of criticism by advocates arguing for more transparency. Former Bishop David Zubik released a report in 2004 stating 35 priests and deacons had been accused of abuse between 1950 and 2003. However, he refused to release their names and, two years later, directed the diocese to destroy personnel records of priests who had been dead for at least a year.

Green Bay's list doesn't include independent orders like the Norbertines, but St. Norbert Abbey has indicated it hired an independent agency to conduct a review of sexual assault allegations. It's unclear whether that report will be made public.

Bishop David Ricken has said he doesn't claim jurisdiction over the orders. But Isely criticized Ricken for not releasing those names, saying the current list isn't complete without them.

"If he’s saying he can’t do that, that’s simply false," Isely said.

Any further updates to Green Bay's disclosure list will be made at the recommendation of the review board and after notifying the district attorney in the county of the alleged abuse, according to the diocese.