How did General Stonewall Jackson die, and who replaced him?

He died at Guinea's Station, Caroline Co. Va on the 10th of May of Pneumonia, after a short but violent illness, following the severe wound received in the battle of Chancellorsville.

At Chancellorsville, on May 2, 1863, Jackson was accidentally shot by his own troops. He lost his left arm, but it was thought that Jackson would recover. However, he died of complications eight days later.

See: http://www.vmi.edu/archives/jackson/tjjgo30.html

He was replaced by Lieutenant General Richard S. Ewell. The man often blamed for the Southern failure at Gettysburg. An amputee and a new bridegroom, Ewell faced immense military and political challenges as Stonewall Jackson's replacement after Chancellorsville.

See: http://tpg2.tripod.com/gettysburg/rmbl0708.htm

For more information, you might want to check the book 'The Road to Glory' by Samuel J. Martin.

https://books.google.com/books/about/The_Road_to_Glory.html?id=wUzjAAAAMAAJ

[Links updated]

Of typoiad in an outbuilding on the Chandler plantation in the rural area of Guinea Station.

Well I believe the place of death is correct.
"O'Reilly is convinced Jackson was suffering from a pre-existing respiratory infection that went untreated prior to the battle. Had it not been for that, Jackson most likely would not have died seven days after being shot three times by friendly fire." https://fredericksburg.com/civil_war/stonewall-theory-he-could-have-lived/article_ec6ef9d9-b71c-58ef-816f-9204173f6f79.html

He was shot accidentally by a Confederate gaurd - and although he did not die immediately, sickness soon ended his life. The South lost perhaps their greatest military mind, which perhaps caused them to ultimately lose the war...

Shot by his own men ,he was recovering from his wounds when he succumbed to pneumonia after the battle of Chancellorville