Indeed, I owned an Hispano Suiza mill in the past.
Interesting machine, with advanced features such as power feed (three rates !) and stops on the quill of the vertical head (no quill on the horizontal though)...
But very awkward to use due to the handwheels layout. The machine had only two handwheels for the three axis. One was for the x carriage, while a tiny lever allowed to engage the second one to move y or z.
You can take my word, it surely required extra attention, not to start a move with the wrong axis engaged... I never found any valuable reason for such a layout.
The spindle gearbox was located in the horizontal ram (top speed of 3000rpm IIRC), and the feed box was attached (including the seperate motor) to the operator side of the "knee". That made for very bulky members, but the general design was bulky anyway.
I think the machine lacked the delicate design of later euro milling machines we often discuss here.
So despite the stork on the side of the column casting, I never looked back after I sold it for a Deckel FP3.
Hispano also made tool and cutter grinders. Member Kees owns both (a mill and a cutter grinder). At least he did the last time I met him with Peter, but it's true that it was a pretty long time ago now !