In England, the rowel spur is shown upon the first seal of Henry III and on monuments of the 13th century, but it did not come into general use until the 14th century.
Rowel spurs being the spinning wheel kind. Most spurs were more like bird talons on the back of your boot.
Per wikipedia:
Rowel spurs being the spinning wheel kind. Most spurs were more like bird talons on the back of your boot.
I.e. shit for throwing.
Alright but it wasn’t until 3 centuries later that Ninja were popularized, so…