she overwent,

strand > shore
overwent > passed

4 She saw bestrewn all with rich array

bestrewn > [was] strewn

5 Of pearls and precious stones of great assay,

assay > quality, proven worth, _hence:_ value

6 And all the gravel mixed with golden ore;
7 Whereat she wondered much, but would not stay

Whereat > At which
wondered > marvelled

8 For gold, or pearls, or precious stones an hour,

hour > instant

9 But them despised all; for all was in her power.

304.19

Whiles thus he lay in deadly stonishment,
2 Tydings hereof came to his mothers eare;
His mother was the blacke-browd _Cymoent_,
4 The daughter of great _Nereus_, which did beare
This warlike sonne vnto an earthly peare,
6 The famous _Dumarin_; who on a day
Finding the Nymph a sleepe in secret wheare,
8 As he by chaunce did wander that same way,
Was taken with her loue, and by her closely lay.

1 While thus he lay in deadly astonishment,

deadly astonishment > death-like insensibility

2 Tidings hereof came to his mother's ear;
3 His mother was the black-browed Cymodoc{e"},

Cymodoc{e"} > (So named at 411.50:6 ff. The name derives from the Greek
_kyma_, wave. She is one of the nereids, sister of Thetis, the
mother of Achilles, whom Cymodoc{e"} comforts in the _Iliad_ 18.39.
She also appears, with other sea-deities, at _Aen._ 5.826)

4 The daughter of great Nereus, who did bear

Nereus > (Son of Pontus and Ge, husband of Doris. He lives at the
bottom of the sea, being especially associated with the Aegean;
like Proteus, he is said to have the power of prophecy)

5 This warlike son to an earthly peer,

peer > mate; nobleman

6 The famous Dumarin; who on a day

Dumarin > "Of the Sea" (French)

7 Finding the nymph asleep in secret weir,

weir > pool

8 As he by chance did wander that same way,
9 Was taken with her love, and by her closely lay.

her love > [love of her]
closely > secretly; closely

304.20

There he this knight of her begot, whom borne
2 She of his father _Marinell_ did name,
And in a rocky caue as wight forlorne,
4 Long time she fostred vp, till he became
A mightie man at armes, and mickle fame
6 Did get through great aduentures by him donne:
For neuer man he suffred by that same
8 _Rich strond_ to trauell, whereas he did wonne,
But that he must do battell with the Sea-nymphes sonne.

1