They all settel in the dark age, though they're from different manufactorers.
The one on the horse is from the Revell Norman set.
The arcers ar ealso from the Revell , but contain to the 100 Years War English footmen set.
Also the knight and the swordsmen are from Revell. The knight of the 100 Years War French knights set and the swordsmen of the 100 Years War English footmen set.
The last remaining swordsmen is from the Airfix Sheriff of Nottingham set.