Nigel Constable has appeared in court charged with the murder of his mother Betty Constable, from Dunholme near Lincoln.
The 51-year-old spoke only to confirm his name, age and address at a short Lincoln Magistrates' Court hearing this morning.
His mother, 79, of Merleswen, Dunholme, died at Lincoln County Hospital on Tuesday, September 24.
Mr Constable, of Sherburn Road, Rastrick, Brighouse, West Yorkshire, was arrested on Wednesday night.
He was remanded in custody and will appear at Lincoln Crown Court on Monday, September 30.