Andrew Keenan, 28, of Bewicke Road, Wallsend, was found at his home before being taken to hospital in Cramlington, Northumberland.
His death is being treated as "unexplained", but police said he may have been attacked in Gladstone Street on 31 July.
Martyn Richard Burke, 27, of Bewicke Road, Wallsend has been charged with murder.
Katie McGuire, 30, of the same street, has been charged with perverting the course of justice and producing cannabis.
A man has been charged with murder after another man died in hospital.