Love the thorn - though presumably you will allow those (like me) with less comprehensive type sets, to replace it with 'th'?

In any case, in the Langland citation, isn't the meaning 'ails'? Or have I missed the point? Perhaps an old person (see Bel's post) is an ailing person?

Anyway - I'm glad to see the resurrection of ayleurs - when I am old and grey and sitting by the fire, I shall think of thee...