arms > armour embossed > encased
5 Yet knight was not, for all his bragging boast,
boast > pomp, vainglory
6 But subtle Archimago, that Una sought
subtle > wily Una sought > [sought Una]
7 By trains into new troubles to have tossed.
trains > tricks, snares
8 Of that old woman tidings he besought,
besought > asked earnestly
9 If of such a lady she could tell aught.