Which preposition to use with lours

at Occurrences 1%

Then when the time came that he could not pay, they would only have had to go without, whereas now, there was the bill louring at the back of the want!

of Occurrences 1%

He was presently sent on a lour of the South, and while in South Carolina was in the charge of Colonel William Washington, a hero of the Cowpens and many other battles.

over Occurrences 1%

Involuntarily but unobtrusively, under cover of the little tubbed trees that hedged the terrasse apart from the square, Duchemin did likewise, and so discovered, or for the first time appreciated, the cause of the uncommonly early dusk that loured over Nant.

Which preposition to use with  lours