The landlord knows her well, but couldn't remember seeing her that night.

If the landlord knows arithmetic, he can do it himself.

Not even his landlord knew what he was up to.

"This has been going on for a while, and the police and the landlord know every minute of it."

The landlord of the pub might know; he left her at the station in Salisbury.

Do landlords know that very high rent increases force higher prices?

The landlord of the inn had known something of my father's family in times past.

Let your landlord know that you are due for a paint job.

And even if he didn't come in, the landlord would know about him.

This applies whether or not the landlord knew of the disability.