Sibling's great-great-grandchild.
I have 212 great-great-grandniblings (106 great-great-grandnieces and 106 great-great-grandnephews).
Sibling's great-great-grandchild.
great-great-grandnibling.
First cousin's great-great-granddaughter.
My first great-great-great-cousin-niece is a good person.
how did it feel when my great northern sleeping bags slapped your neck?
Half-sibling's great-great-grandson.
half-great-great-great-nephew.
Half-sibling's great-great-grandson.
My half-great-great-great-nephew is a good person.
Sibling's great-great-great-grandchild.
My great-great-great-great-nibling is a good person.