Cousins, or persons related by blood, collectively(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "cousinhood" in a sentence
"Let's have two variables named C ( "cousinhood") and R ( "generations removed")."
"According to popular mythology, World War I broke out largely because of a decadent, inbred cousinhood that ruled over the Old World's dynastic empires in a way that was undemocratic but also competitive, promoting an arms race that their pacific European subjects could not prevent and that could only end in war."
"One suspects that Ms. Carter skimps on her discussion of Franz Josef because he was only distantly related to the book's "cousinhood.""