Page "Baron de Ros" Paragraph 2

Whenever a man holds the title, he is styled the Premier Baron of England.

However, whenever a woman holds the title, the holder of the next-highest barony held by a man is known as the Premier Baron.

For instance, when Georgiana Maxwell, the most recent female to hold the title, was Baroness, the Lord Mowbray, Segrave, and Stourton was considered the Premier Baron.