In fact, Airi's great-great-great grandmother was a traitorous princess from Astelle, Chrisnelle, making her a direct descendant of the royal family.

Later, after Zee is informed by Daryl, since Mercy is unable to tell him herself, he locates Phin's great-great-great grandmother.

While held by John Waller, Kinte had a daughter named Kizzy, who was Haley's great-great-great grandmother.

And then, 13 years ago, she "woke up" - meaning that she found out that her great-great-great grandmother had been a revered healer in her native African village.

But her great-great-great grandmother, it seems, has other ideas.

Rain's great-great-great grandmother probably knows what it all means.

"But she calls you her great-great-great grandmother . . . why?"

Her cousin Ulla always said that if she weren't training like a maniac, she'd look like round little great-great-great grandmother Anzehla swathed in widow's black.

That means Marriages into great-great-great grandmothers' clans are also avoided.

One said: "A great-great-great grandmother of a storm, Muad'Dib."