See, this is going to be really
hard, because weapons evolved in shape and function. In a continuous evolution, where do you say the new form starts and the old one stops?
1. Glaive Agricultural tool for trimming trees or evolved from the spear?
1a. "Hewing Spear" Any consensus on what this weapon was?
Well, define what a "glaive" looks like for me, will you? The earliest date I can give you is the second half of the 11th century; a blunt-ended, machete-like blade on a stick in a mural in Byzantium. By the the 12th century we have recognizable billhook-guisarmes and glaives in murals and other sundry illuminations of varying quality. And of course there's the Maciejowski bible.
2. Voulge Clearing brush? At least that's what they're sold for today and what I use mine for. Eastern Europe?
Again, define what a volgue is. Differentiate it from a glaive or a billhook for me? It's "Classical" or textbook shape originates in the 13th century.
3. Bardiche Eastern Europe 15-16th century?
I can find you Dane axes that look an awful
lot like bardiches... so is the axe a dane axe when it's in western europe and a bardiche when it's in eastern europe? If so, I know it's at least as old as the 11th century. That's about where I stop paying attention, so it may predate that by a significant amount.
A swiss invention from, IIRC, the early 14th century. It's most recognizable form dates to the late 15th century.