Just seen this. I am descended from the Denny Heenans, at some point in the early 20th century they changed their name to Hannan though to make it extra tricky. My relative is Thomas Heenan/Hannan born 1887. He had a son called Lawrence but I think he was born before 1920 ? Not sure. I thought he and Margaret were born pre 1st World war and then the other 10 came tumbling after. 4 are still alive.