patricide
"troubled"
Only if they have a kid of their own (or multiple kids).
Matricide (mother) or patricide (father) is the act of killing one's own mother or father, respectively.
Your own mother
Cleopatra came from a family of killers. It was the original dysfunctional family. The Ptolemies seemed to have a family tradition of killing each other off and not in pretty ways. Cleopatra's own father did not hesitate to kill his daughter and Cleopatra followed the tradition by killing both her brother and sister.Cleopatra came from a family of killers. It was the original dysfunctional family. The Ptolemies seemed to have a family tradition of killing each other off and not in pretty ways. Cleopatra's own father did not hesitate to kill his daughter and Cleopatra followed the tradition by killing both her brother and sister.Cleopatra came from a family of killers. It was the original dysfunctional family. The Ptolemies seemed to have a family tradition of killing each other off and not in pretty ways. Cleopatra's own father did not hesitate to kill his daughter and Cleopatra followed the tradition by killing both her brother and sister.Cleopatra came from a family of killers. It was the original dysfunctional family. The Ptolemies seemed to have a family tradition of killing each other off and not in pretty ways. Cleopatra's own father did not hesitate to kill his daughter and Cleopatra followed the tradition by killing both her brother and sister.Cleopatra came from a family of killers. It was the original dysfunctional family. The Ptolemies seemed to have a family tradition of killing each other off and not in pretty ways. Cleopatra's own father did not hesitate to kill his daughter and Cleopatra followed the tradition by killing both her brother and sister.Cleopatra came from a family of killers. It was the original dysfunctional family. The Ptolemies seemed to have a family tradition of killing each other off and not in pretty ways. Cleopatra's own father did not hesitate to kill his daughter and Cleopatra followed the tradition by killing both her brother and sister.Cleopatra came from a family of killers. It was the original dysfunctional family. The Ptolemies seemed to have a family tradition of killing each other off and not in pretty ways. Cleopatra's own father did not hesitate to kill his daughter and Cleopatra followed the tradition by killing both her brother and sister.Cleopatra came from a family of killers. It was the original dysfunctional family. The Ptolemies seemed to have a family tradition of killing each other off and not in pretty ways. Cleopatra's own father did not hesitate to kill his daughter and Cleopatra followed the tradition by killing both her brother and sister.Cleopatra came from a family of killers. It was the original dysfunctional family. The Ptolemies seemed to have a family tradition of killing each other off and not in pretty ways. Cleopatra's own father did not hesitate to kill his daughter and Cleopatra followed the tradition by killing both her brother and sister.
Killing your Father is Patricide.
If you mean "fraternicide", then it is the killing of your sibling. As opposed to patricide, which is the killing of your father, or matricide which is the killing of your mother.
Max stopped his father from killing Loretta by taking Killer Kane's knife and threatens him with it.
In the Hindu epic Mahabharata, Arjun was killed by his own son Babruvahana during a battle. Babruvahana was unaware that Arjun was his father and the killing was accidental.
Killing your first born son.
I can see why you would be confused, as Christ said "Call no man father." However, if this were meant to be taken literally, we would not be able to call our own fathers by the term "father." Priests and the pope are spiritual fathers to the people. I am adding a link that should also help to clear things up.
buck's killing spitz.