Really?, I would not have guessed that, based on the below, but good to know:
Inca - Widest last and waist for wide feet (EE width)
Rain - Like the Inca but with a chisel toe (EE width)
Soller - A boot last like Robert, fits like a double E.
Forest - Standard width with round toe (E width)
Uetam - Similar to Forest but a shade narrower (E width)
Robert - Like the Simpson but more room in the toe box (E width)
Queen - an E width, similar to Alcudia but shorter