John Gill Commentary Genesis 44:19

"My lord asked his servants, saying, Have ye a father, or a brother?" — Genesis 44:19 (ASV)

My lord asked his servants
The first time they came down to Egypt to buy corn; he puts him in mind of what passed between them at that time: saying, have you a father or a brother ?
which question followed upon their saying that they were the sons of one man, (Genesis 42:11) (43:7) .