also distroblans, -troybulance, -trublance, -tribulance.
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from Middle English from Old French destrobler, -troubler, from des-, Latin dis- + trobler, troubler to trouble
An etymologically earlier Old French form of the latter was torbler, turbler, tourbler (:—Latin *turbulāre), whence the earlier Middle English type desturble, -tourble, disturble. Trouble had become at an early date the prevalent form of the simple vb., and distrouble gradually superseded disturble, but itself scarcely survived to 1600. Scottish distrybul, distribulance, etc., were apparently associated with Latin tribulāre to afflict, oppress + -ance; probably after a corresponding French form
From: Foedera, Conventiones, Literae, Et Cujuscunque Generis Acta Publica
By Thomas Rymer
Volume VIII, 1709
A. D. 1398. Conventiones Super Trengis Scotiae.