Hello everyone

I think that for the second surname it begins with a H as in Hammersmith.
That is all I am sure of

If Jean is a scottish name in that time period having a Mc to start the surname would indeed make sense.
Gadget, I will request a look up at the LMA to look at the signature, I just may be lucky that someone is going there.
Pinetree, I might give those people a ring from the website you gave, they just may be able to help, thank you for the details.
I've got a good idea, why don't you just all come round my house and we can mull it over with a cup of tea and cream cakes in the garden

Many thanks
Ewan