'Butonethyng begyledus, that wemyght nat setheHoly Grayle hit was so preciously coverde.Wherefore I woll make here a vow that to-morne, withoute longer abydynge,I shall laboure in the queste of the Sankgreall.'

-Malory, SirThomas   d.1471
c.1470  Sir Gawain. Morte d'Arthur, bk.13, ch.7.

I vow to thee, my countryöall earthly things aboveö Entire and whole and perfect, the service of my love.

-Spring-Rice, Sir Cecil Arthur
  I VowToThee, My Country.