Just to continue this discussion away from the action:
This is true, but the 4 men have most certainly not sworn homage to Leddicus, so we can ignore that - as household knights, they owe fealty to Leddicus, he holds an estate on which they live. However they also owe their fealty to Roderick, who knighted them.
When it comes to split loyalties, we know that the individual knight must balance his loyalty to each lord (Roderick default is 15, Leddicus default is very low, starting at 10, he gets a -5 from being from a foreign culture, and perhaps worse from cramming them all into two manors rather than letting them hold one of their own) so best case it’s loyalty (Leddicus) (5) - when it comes to Owain giving them orders, they will not let those orders override their fealty to Leddicus, however, when it comes to Hogarth, who speaks with the authority of Roderick while he leads this military unit, then with 10 difference, I don’t even need to roll, they automatically allow Hogarth to override Leddicus.
This isn’t me dictating how it is, I know it reads like that - I’m open for discussion, but this is my interpretation of the situation