The text discusses the events of 1239 concerning Prince Yuri Vsevolodovich. What significant event related to his death and burial is mentioned?

The text states that in 1239, the coffin with the body of Yuri Vsevolodovich was transported from Rostov the Great to Vladimir, where he initially found his resting place. This event is described as causing the entire city to be filled with lamentation, with the people of Vladimir tearfully remembering their fallen prince.