In a comment a couple of days ago Ross Mac mentioned once having designs on assembling a Minifigs "Barbarian Conspiracy" Army. Here are a few likely candidates for inclusion:
The central figure is the PBs range Pictish chieftain. Sadly my old eyes are too weak these days to pick out the codes on the other two, but the one of the left is likely a Saxon chieftain, while the one on the right could be a Saxon peasant spearman, though his shield looks a little small)
The Barbarian Conspiracy Army features in the first of the WRG Ancient Army Lists booklets, published in April 1977 (In the early years WRG were always quite specific on the month of publication, presumably so that Ancient competition rule-nutters could say "Yes, but that was what they said then. It's June now and Gepids were officially upgraded to C class on May 20th whereas, of course - snigger, snigger - your Heraclian Byzantine Camp servants were denied access to the range-enhanced staff sling a mere two days ago") and allows for a coalition of Saxons, Picts and Irish, with the Saxons taking overall charge, presumably because they were German and had a stronger economy than the others.
Intriguingly the introduction to the first lists gives thanks to "The Deadly Douglases of Humshaugh", a village about four miles from where I live and which was previously famous mainly as the birthplace of the actor Kevin "Lewis" Whately and home of the man who wrote the popular Christmas song, Little Donkey. Nice to think it was also once a hotbed of lads who knew exactly how many Fundibuli could be deployed in a 1,000pt Carolingian force.