Patricide, matricide and various-other-members-of-your-family-cide

[bluesqueak]

Having just strayed across another one of Cindy's posts (this one is 
her theory that Hagrid's father was actually killed by his mother), 
can anyone think of a category for general family slaughter?

Riddle is obviously a parricide, and whatever-grandparents-are-icide, 
there are several theories floating around current posts that Mummy 
Fridwulfa's going to off Hagrid (filicide), if Hagrid manages to get 
her first that's matricide...

You see my point? Any of you language experts know a word that covers 
any murder of any member of a family by any other member of that 
family?

Pip
[who is beginning to wonder if JKR actually *likes* her family...