1 There they do find that godly aged sire,
sire > father; elderly man
2 With snowy locks adown his shoulders shed,
adown > down
3 As hoary frost with spangles does attire 4 The mossy branches of an oak half dead. 5 Each bone might through his body well be read,
read > seen
6 And every sinew seen, through his long fast:
through > as a result of
7 For naught he cared his carcase long unfed;
naught > not at all, nothing at all cared > [cared about; cared for]