Any relatives of Bradford man Alan Thompson are asked to call the Coroners Office.
Mr Thompson, 64, was found dead at his home address of Chassum Grove on 9 July.
He died of natural causes.
Very little is known about Mr Thompson although it is thought he had previously been a merchant seaman.
Any relatives are asked to contact Coroners Officer Gemma Harrison on 01274 373721
Source:: West Yorkshire Police Appeals