Digby,
Nothing specific thanks. Just wondered if you'd covered them.
Foy (Invasion) and Oman Vol I list them in the army of Portugal.
According to Oman, p. 243:
* only two companies of the 4th battalion, 1st regiment, were present at Vimeiro (the majority garrisoning Peniche) and
* the 2nd battalion / 2nd regiment were in garrison in Elvas.
Thanks again
A