أورخان بن عثمان

Sultan Orhan ibn Osman ibn Ertugrul, who ruled from 726 to 761 AH (1327–1360 CE), and who was the second sultan of the House of Osman ².

al-Salabi reports that he followed the policy of his father Osman in rule and conquest. Nicomedia fell into his hands in the year 727 AH, and he founded there the first Ottoman university, and entrusted its administration to Dawud al-Qaysari ².

He concerned himself with building the army on modern foundations, and made it a regular army ².

He devised a plan to besiege Constantinople from the west and the east. He sent his son and heir Suleyman to cross the Dardanelles strait and seize positions on the western side ².

• The date of death (1360 CE) is recorded in the data with the status of "commonly transmitted report".