1676, Aphra Behn, The Works of Aphra Behn, Vol. III Chapter The Town-Fop, Ye all doat upon him, but he's not the Man you take him for.
1786, Robert Burns, Poems And Songs Of Robert Burns Chapter Song, Composed in Spring, --And maun I still on Menie doat, And bear the scorn that's in her e'e?
1825, William Hazlitt, The Spirit of the Age Chapter , We are so far advanced in the Arts and Sciences, that we live in retrospect, and doat on past atchievements.