Great question — answering as the UphillTech team:
Unfortunately sorting bread pans by loaf weight is very vague. A 1lb light and fluffy white sandwich bread might have about the same size as a 2lb heavy, dense wholegrain or rye bread. Also, do you expect your bread to rise really high over the rim or should that be more of a limit? In short, the size of "a 1lb bread" depends a lot on the kind of bread you have in mind. A quick Internet check of pan dimensions from various manufactureres confirms that there is no standard size, it seems they vary by up to 50% in volume. So if your relative's wish list states a pan of a certain size , I suggets you go shopping equipped with a meassuring tape instead of looking for a certain "pound value"....
Full answer by Stephie: https://cooking.stackexchange.com/a/64273 (CC BY-SA 3.0).
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