I have difficulty getting a comfortable fit in shoes. This is due to the non-standard shape of my feet. From the description of the difference between the OP's measured size and that with which he has been wearing, it may be that he has the same problem I do - the location of the widest part of the foot is in a nonstandard location.
Whatever the shape of one's foot, it is necessary to measure one's feet. To do this you get your feet measured on a Brannock device, paying particular attention to the size of shoe one should wear based on the location of the widest part of the foot. A competent shoe salesperson can do this, so can an obsessed shoe enthusiast. (I have two Brannocks, US and English.)
With this informatioon and knowledge of the fits of the various brands and their particular shapes, the aforementioned knowledgable shoe seller should be able to suggest shoes that fit well. The main thing to remember is that there is little if any consistency in size or fit between brands of shoes, or between different shapes of shoes from the same manufacturer.
Depending on how much time, effort and money one wants to spend on getting comfortable dress shoes, it is possible to find a brand of shoe with a last (the wooden pattern on which a shoe is built) and size that is just right. It could be Aldens, which as noted, have a combination last, meaning that the width of the heel is a different size (narrower) than the width of the front of the shoe. This has been described as a typically American fit. Or, if one's feet are wide in the heels, Loakes would fit better than Aldens. Allen Edmunds has several lasts and many people find at least one of them to provide a good fit in their proper size.
In my experience none of the above mentioned shoe brands fits me in any of the lasts which they offer. Nor, for that matter, do Lobbs, Churches or most other brands of dress shoes fit comfortably. I have, however, found a size and last combination from Edward Green that fits almost as well as custom made shoes do. I can now mail-order Edward Greens and be certain of getting comfortable shoes. Difficult-to-fit feet are something of a fancy problem. But solving it can be a pleasant diversion.
I hope this helps.
Regards,
Gurdon