(reigned c. 2414–2375 BC). Personal name Isesi. Penultimate ruler of Dynasty 5. His pyramid at Saqqara was discovered in 1880, but the owner remained unidentified until an Egyptian expedition in 1945. Further work was carried out in the 1950s and 1980s, and a French expedition began work on the site in 2000. The pyramid complex has not yet been fully published.
Historical Dictionary Of Ancient Egypt by Morris L. Bierbrier
Ancient Egypt. A Reference Guide. EdwART. 2011.