Petals Around the Rose: Fraternity Register

I loked at it and with just a few rolls with answers i thought about it and in less than five minutes had sussed it. i've quickly shown four others, one of which lost interest trying, another took three straight hurs and got it, aanother is clueless and taking time, another is agonising over it still from many, many hours of slaving over it. One thing i can't work out, is why they say the name PatR is signifigant...i think i missed that bit in my mental workings...