"Ubi Amor Ibi Fides" is latin for "Where there is love, there is faith." It appears in many family crests, eg, Belfield, Garratt, Darbishire, Jaquiery and more. The gun is most likely English in origin. Pictures would be the only way to id the maker, if at all. You say there is #1 on the receiver. So it may be one of a matched pair.

The second gun does not sound like it is worth the bother, unless the price is very low.

Pete

http://www.damascus-barrels.com/Movie.html