Rubus, possibly a caesius, commonly known as Dewberry.
"Rubus" is Latin for bramble, which it is related to, presumably a reference to the thorns of many plants in this genus when derived from an Indo-European root *reub- (to tear), meaning a bush that can cause injury.
Planted around homes and gardens, it was thought to ward off malicious spirits – everyone who has had any form of Rubus growth can relate to that notion; those are impassable!
