Death
John William Joseph Osborn
Death Date 7 Mar 1988
Death Place Birstall Leics
Probate Date 24 May 1988
Probate Registry Oxford
John William J Osborn
Death Age 82
Birth Date 7 Aug 1905 (same as 1939 register)
Registration Date Mar 1988
Registration District Leicestershire Central
Inferred County Leicestershire
Volume 6 Page 2007
Obituary - no access to newspapers
https://www.ancestry.co.uk/search/collections/62221/records/132263406John Osborn
Death Age 82
Birth Date abt 1906
Residence Place Bir-Stall
Death Date 7 Mar 1988
Obituary Date 9 Mar 1988
Obituary Place Leicester, Leicestershire, England
Newspaper Title Leicester Mercury
Child
John
Joan
Possible remarriage for John WJ in 1963, but don't think they had children.
Edit to add - There is a likely marriage for son in 1960 Leicestershire who married a Joan