The capital city of Mortimer is not widely recognized as a political entity, as Mortimer itself is a village located in Berkshire, England. It does not have a capital in the conventional sense since it is a part of a larger governmental structure. Instead, the larger administrative area, Wokingham, or even the county of Berkshire can be considered in a broader context. Mortimer is known for its charming village atmosphere and historical sites, making it an area of interest but not a recognized capital city.