Consider 'Bitwene March ant Averil' (probably better known as 'Alysoun') from the Harley lyrics, with its burden in a mix of long metre and
ballad metre:
Tennyson himself had doubts about any attempt to reconstruct chivalric themes in epic form but they do not interfere with his serious intent to develop his own epic repertory in all its varied moods and rhythms, from
ballad metre to blank verse.
Alas, much of the verse is derivative and melodramatic, in monotonous
ballad metre with occasional ventures into anapaests: