I used my index: I sorted all the names I have according to the hints I had.
The names were not few, (Andrč, Atalanta, Barson, Vale, Harker, Lammas-Graham, Leidart, Squire, Salmon etc.).
After a rough selection, there were still 70 names.
I tried to narrow them down looking at what they did (3-wheelers, coachbuilt cars, specials, and so on) and many names were out.
When I had less names, I started again from the beginning and Batten was the 1st of the possible ones.