Coroners in Leeds are appealing for any relatives of Robert Siddall to get in contact.
Mr Siddall, 69, was found dead at his home address of Fearnley Place, Armley on 25 April. He died of natural causes.
It is thought Mr Siddall had a sister called Christine who was originally from the Leeds area.
Any relatives or anyone with information about any family members are asked to call Coroners Officer Clive Firth on 01924 292301.