My parents grew up in Italy so I know the clericalism of which you speak.
However bad it got though, I don’t think in most places it was so depraved as to be burying masses of illegitimate infants beneath the floorboards. Especially since cloistered monastics were behind an iron grill and had busy, busy days of work and prayer and didn’t have a great deal of opportunity or time for those kinds of shenanigans.
If you find something I’ll be happy to look at it though.
Well I offer this. I may be the only one commenting here that was actually in a orphanage. It was 1940 in NYC with a younger brother and sister after both parents died. It was the greatest thing that ever happened to us. The priests, nuns and prefects were outstanding and caring. I knew of no sexual happenings. Yes there were very young children there too. I went to a NYC school and my job was cleaning cows at our dairy because we had no pasteurizing equipment. Thank God there were places like that. They could use them today.