Also, they both are in cities that have a smelter. I'm not sure why Solitude, Skyrim's capitol, doesn't have a smelter.
I will eventually make my own mod to fix that and to spiffy up Proudspire's lack of basement storage. The mods I see out there tend to overdo Proudspire, such as getting rid of poor Jordis' room for a smithy or adding a second basement level with a dozen armor stands and 22.5 weapon mounts...
Amusing Skyrim moment of the day: I was working towards Thane of Falkreath and was given the task of killing a bandit leader in a local mine. I reached him while sneaking and when Lydia and I both attacked, we both got our finishing moves at the same time.
The camera angles were jumping all over the place and when it was all done, the bandit's body fell through the floor, leaving just his 2-hander at our feet. I was like "Did we just chop him into a fine mist?"