What does 'Mengye' mean in Early Scots?

[Macrobius]

The full context is understanding the preface to a poem by James Clerk Maxwell....



I suspect the poem *does* have a meaning and here are several usages:

https://allpoetry.com/The-Brus-Book-III (Attention Conservation Notice: 14,000 lines of Early Scoots)


That poem is prefaced in this much shorter one, a prize winning essay by (the future Sir) James Clerk Maxwell, of Physics Fame

https://allpoetry.com/The-Death-Of-Sir-James,-Lord-Of-Douglas

"Men may weill wyt, thouch nane thaim tell,
How angry for sorow, and how fell,
Is to tyne sic a Lord as he
To thaim that war off hys mengye.’

- Barbour's Bruce, B. XX. i. 507.

Thread related: https://tunisbayclub.com/index.php?threads/what-does-mengye-mean-in-early-scots.2628/