Seth the ‘Seeder’ in Piers Plowman C. 10. 249.

The triple repetition of forms of the word “seed” in C. 10. 249 (“Seth should not permit his seed to ‘seed’ [i.e., to beget children] with the seed of his brother Cain”) is to be understood in light of both the interpretation of Seth’s name as (Adam’s) seed (Gen. 4:25; cf. Jerome, Liber interpretationis hebralcorum nominum; Isidore, Chronicle) and his biblical role as the man who bears the seed of Adam.