'Certain' in the Bible

And he lighted upon a certain place, and tarried there all night, because the sun was set; and he took of the stones of that place, and put them for his pillows, and lay down in that place to sleep.

And a certain man found him, and, behold, he was wandering in the field: and the man asked him, saying, What seekest thou?

And it came to pass at that time, that Judah went down from his brethren, and turned in to a certain Adullamite, whose name was Hirah.

And Judah saw there a daughter of a certain Canaanite, whose name was Shuah; and he took her, and went in unto her.