Definition of "hereto"

I, A. B., do solemnly swear and attest that the account hereto annexed is true and right...

1697, Daniel Defoe, An Essay upon Projects

Which the rather / We shall be bless'd to do, if he remember / A kinder value of the people than / He hath hereto priz'd them at.

1609, William Shakespeare, Coriolanus

Lords had not been frequent among her acquaintance hereto.

1861, Anthony Trollope, Framley Parsonage

I realized that everything belongs to God, that slumber does not overtake Him. He created everything. At this point I began to lose the pride in me, because hereto I had thought the reason I was here was because of my own greatness.

c. 1980, Yusuf Islam (aka Cat Stevens), How I Came to Islam