Short answers, pulled from the story.
Stefan Dušan was born around 1312 and was the tallest man of his time with dark hair, brown eyes, and a beard. He was a physical giant who commanded a kingdom that stretched from the Danube River to the Gulf of Corinth.
Stefan Dušan became King of All Serbian and Maritime lands on the 21st of August 1331 after besieging his father Stefan Dečanski. He had his father imprisoned and was crowned within the first week of September 1331 following the surrender at Petrich.
Stefan Dušan promulgated the Dušan Code on the 21st of May 1349 in Skopje as a legal document of 155 clauses. The Code served as the constitution of his empire and later expanded with 66 additional clauses at Serres in 1353 or 1354.
Stefan Dušan died suddenly on the 20th of December 1355 at his court in Prizren. His death created a large power vacuum that caused the empire to fragment into numerous independent Serbian states under his son Stefan Uroš V.
Stefan Dušan elevated the Serbian Archbishopric to the status of a Patriarchate in 1346 to grant the Serbian Church full autocephaly and independence from the Ecumenical Patriarchate of Constantinople. This move allowed him to appoint Serbs to the highest episcopal positions and ensure the church served as a pillar of his state.