AYWHERE

also ǽᵹhwǽr, aihware, aiware, ayquar, aywhare, aywhore, eghwar, eihwer, eᵹhuær, eᵹhwer

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Old English ǽᵹhwǽr, for ǽᵹehwǽr, cognitive with Old High German eogihwâr, from á ever + ᵹehwǽr everywhere, ‘ubique.’ 
Thus really the equivalent of ever-ywhere, but in Middle English phonetically reduced so as to look like a compound of ay ‘ever’ and where; hence ay-when

c 1000 - Anglo-Saxon Gospels;
see below From: The Gospel according to Saint Mark 
In Anglo-Saxon and Northumbrian Versions
Edited by the Rev. Walter W. Skeat, 1871
Cap. XVI
P. 134

From: Seinte Marherete the Meiden Ant Martyr, in Old English, 
Edited by Oswald Cockayne, 1866
Seinte Marherete Modernized
P. 62