All 7 Uses

i.e.
in
Beowulf - (translated by: Hall)
(Edited)

And the beloved land-prince enjoyed (had) his
transitory days (i.e. lived).
*

i.e. = that is to say or in other words
heard
from his neighborhood (neighbors),_ i.e. _in his home, etc_.
translates: _Thou wilt not need my head to hide_ (i.e., thou wilt have
no occasion to bury me, as Grendel will devour me whole).
To the present
translator, the phrase 'modes myrethe' seems a mere padding for
_gladly_; i.e., _he who gladly harassed mankind_.
limiting Wiglaf; i.e. _W.
[6] The parenthesis is by some emended so as to read: (1) (_He_ (i.e. _God_) _is the hope of men_); (2) (_he is the hope of heroes_).
_ [5] B. renders: _That which drew the king thither_ (i.e. _the treasure_) _was granted us, but in such a way that it overcomes us.

Definitions:

(1) (i.e.)
that is to say; or in other words
(2) (meaning too rare to warrant focus)
Much less commonly, i.e. can refer to someone's initials.