Thou/You

My vowel lengths may be wrong here, but I was under the impression that
during the Great Vowel Shift, /u:/ became /au/, thus Anglo-Saxon /Tu:/ turned
into /Dau/, but that /o:/ turned into /u:/ or /U/ (as /go:d/ became /gUd/ and
/do:m/ became /du:m/, which means that /ju:/ for "you" fits the pattern
regularly, since in Anglo-Saxon it was "eow" with a long /o/ vowel.

Thomas Leigh