The 24-year-old was found dead at his home in Skellow on 14 August.
South Yorkshire Police believe Mr Siddall was assaulted in the VDKA bar in Silver Street the night before. A post-mortem examination concluded he died of a head injury.
Blue Horrobin, 22, of Highfield Road, Askern, has been charged with manslaughter and released on bail.
He will appear at Doncaster Magistrates' Court on 1 March.
A man has been charged in connection with the death of Lewis Siddall in Doncaster.