Jugson was one of the Death Eaters in the Inner Circle that rarely got any attention. Hermione hardly knew him before his untimely demise because he mostly kept to the sidelines. He'd seen enough action that he wasn't eager to climb his way to the top. Besides, he had a disgusting belief about Muggle-borns that made her loathe and despise the monster from the beginning of her career. More than a few times he made it clear to her that he believed she should've been murdered long before she was ever able to pick up a wand.