How to use "watchman" in a sentence

He ran to a warehouse nearby and called out for the night watchman, a man named Morris

Mr Morris, the night watchman in the warehouse, went to the door and looked into the square 'two moments before Constable Watkins called him

'I assume you have a night watchman at your factory, Monsieur Delambre

The night watchman had heard the hammer twice

The night watchman must have heard the hammer and would be round at any moment