Alright, Sage's Guild, I need you to identify (if possible, or even plausible) where and when the sword in this sketch came from (click to enlarge):

Why am I asking? Well, this sword, along with a portrait of an 1140s knight called Rhys ap Gruffydd will be painted onto the side of a portacabin in the castle that I volunteer in. I get a feeling that the sword shown in this picture isn't:
a) From the period
or
b) From a Welsh/British swordsmith (and being a devout Welshman, I doubt Sir Rhys would have wanted a norman sword

)
I'm not entirely sure how easy it would be to guess when/where the sword is from, seeing as how it's only the hilt and a part of the blade, and as it isn't coloured in. If anyone can do this, I'd be very grateful.