@Gae for Gaes because they planned to assasinate Lord Roman, not to win a normal fight.

@Malevolent_King It is easy: word 'bas****' is refering to the child not from marriage, very often adultery. This was basic meaning of that word. It could be used for commoners affairs too. Usually, the royal X commoner is an example of adultery, therefore the child of them is called "bas****". 

Of course, I am not telling that the child is guilty. Hope that this answers your concerns. :)