Spot on,Eddy I googled Molly Quirks Glen And this is how it's described.
"A narrow wooded glen along the Groudle river.The name comes from the legend of Molly Quirk
who was said to have been robbed and murdered in the glen.There is ,however,no proof of this tale.
Bibaloe walk,a streamside pathway,connects to this glen as does Groudle Glen which is just the other side of the passageway under the main road."