I have Gertrudes 2nd marriage certificate
Register Office District Bootle
3rd July 1948
William Thompson - 70 - Widower - Security Officer, Pool Promoters
Residence - 16 Rogers Avenue Bootle
Father - James Thompson - Deceased - Farmer
Gertrude Cole - 69 - Widow
Residence - 42 Keir Hardie Avenue Bootle
Father - William Edwards - Deceased - Tailor
Witnesses - J W Cole + G Smith
It's definitely our Gertrude - age correct, same address - just another surname for Father!
I've found all possible records for William Thompson including he + his first wife lived 11 doors down from Gertrude + Leonard in 1939 + presumably till his wifes death in 1946
Also Gertrude died in 1956 + is buried in the same grave as Leonard + their youngest son at Kirkdale Cemetery
I've tried all different combos of the surnames but haven't managed to link it all together