How do you pronounce "cheviot" -- with french style "sheviot" or CHeviot, like "chum"?

And what would the pronunciation be historically in the 1430c version?

   D  Em  D  A                   D A7  (D7)
  The Persè owt off Northombarlonde,
        G  (Am  G)  D    G   
  and avowe to God mayd he
       D  (A    D)   Em  D        A  
  That he wold hunte in the mowntayns
       G    (Bm)  A7       D
  off Chyviat within days thre,
  
  ['Nethar in Ynglonde, Skottlonde, nar France,
  nor for no man of a woman born,
  But, and fortune be my chance,
  I dar met him, on man for on.']
  
  'Yelde the, Persè,' sayde the Doglas,
  and i feth I shalle the brynge
  Wher thowe shalte haue a yerls wagis
  of Jamy our Skottish kynge.
  
  'Nay,' sayd the lord Persè,
  'I tolde it the beforne,
  That I wolde neuer yeldyde be
  to no man of a woman born.'
   
  A the tothar syde that a man myght se
  a large cloth-yard and mare:
  Towe bettar captayns wear nat in Cristiantè
  then that day slan wear ther.
  
  Of fifteen hondrith archars of Ynglonde
  went away but seuenti and thre;
  Of twenti hondrith spear-men of Skotlonde,
  but even five and fifti.
  
  Word ys commen to Eddenburrowe,
  to Jamy the Skottishe kynge,
  That dougheti Duglas, lyff-tenant of the Marches,
  he lay slean Chyviot within.
  
  Worde ys commyn to lovly Londone,
  till the fourth Harry our kynge,
  That lord Persè, leyff-tenante of the Marchis,
  he lay slayne Chyviat within.
  
  'God haue merci on his solle,' sayde Kyng Harry,
  'good lord, yf thy will it be!
  I haue a hondrith captayns in Ynglonde,' he sayd,
  as good as euer was he:
  
  Ihesue Crist our balys bete,
  and to the blys vs brynge!
  Thus was the hountynge of the Chyvyat:
  God send vs alle good endyng!