[The Squatter of Amon Rûdh]

Further to the above, the following is from Beowulf: The Monsters and the Critics:

[ Beowulf ] is divided in consequence into two opposed portions, different in matter, manner and length: A from 1 to 2199... B from 2200 to 3182 (the end). There is no reason to cavil at this proportion; in any case, for the purpose and the production of the required effect, it proves in practice to be right.
This simple and static structure, solid and strong, is in each part much diversified, and capable of enduring this treatment.

Here we have the alliteration of 'matter' and 'manner'; 'purpose', 'production' and 'proportion' and, most notably, of five out of eight words at the beginning of the last sentence.

Another example from the same piece is truly poetic:

The placing of the dragon is inevitable: a man can but die upon his death-day.

Of course I may just be getting carried away on the alliteration point. It may be unintentional, but it adds so much to the general tone of his writing that I doubt the effect was lost on him.