Proclaimed
If you wanted to know, he proclaimed, “The grandchildren of the sons of any such Sovereign in the direct male line (save only the eldest living son of the eldest son of the Prince of Wales) shall have and enjoy in all occasions the style and title enjoyed by the children of Dukes of these Our Realms.” This means that you are not a prince unless you are a male family member in the direct line of succession.

Proclaimed
Gender Equality
In the past, however, the “male” part of the ruling has changed. Prior to the birth of Prince George, the British government began following “absolute primogeniture.” It means that the firstborn child of the heir would be able to ascend the throne regardless of their gender. That said, a younger boy in the succession is no longer going to come first if an older girl is there. Gender equality is now counted!

Gender Equality