Gerald128's definitions
Septuple-3C:
Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents and fourteen great-great-grandparents in common.
Person who, in relation to the other person, has zero parents, zero grandparents, zero great-grandparents and fourteen great-great-grandparents in common.
My septuple-third-cousin is a good person.
by Gerald128 May 15, 2021
Get the septuple-third-cousinmug. 
Half-cousin or half-1C:
1- Parent's half-sibling's child.
2- Person who, in relation to the other person, has zero parents and one grandparent in common.
1- Parent's half-sibling's child.
2- Person who, in relation to the other person, has zero parents and one grandparent in common.
My half-first-cousin is a good person.
by Gerald128 May 15, 2021
Get the half-first-cousinmug. 
Sibling's grandchild.
I have 78 grandniblings (39 grandnieces and 39 grandnephews).
by Gerald128 April 6, 2021
Get the grandniblingmug.