Great-great-great-grandparent's half-sibling.
My half-great-great-great-grandpibling is a good person.
My great-grandpibling-by-marriage is a good person.
1- Step-great-grandparent's sibling.
2- Great-grandparent's stepsibling.
My step-great-grandpibling is a good person.
I have 96 great-grandpiblings (48 great-grandaunts and 48 great-granduncles).