The Eleventh (all of Egypt), Twelfth, Thirteenth and Fourteenth Dynasties of ancient Egypt are often combined under the group title, Middle Kingdom, though the dynasty overlaps partially with either (or both of) the Thirteenth Dynasty or the Fifteenth Dynasty, during the Second Intermediate Period.
It is associated with the Delta region of Egypt, and may have ruled from Xois, though for only little more than 100 years. Its rulers may have been related to the Hyksos, though they are very frequently identified as being of Semitic origin, owing to the distinct origins of the names of some of their Kings, like Yakobaam.
As many as 76 kings are known from various king lists (from Manetho; the Turin Royal Canon gives 32), but only a few are attested in contemporary sources, so some may not have been actual rulers (eg some may be pseudonyms of other rulers). Most likely, many of these ruled concurrently over different parts of the Delta.
Known rulers, in the History of Egypt, for the Fourteenth Dynasty.