Personally, I tried various ways in searching for any information for your biological father and came up with various possibilities, but I wasn't confident enough in the results.
It also appears (to me) that you may/might have been adopted since your LNAB is "La Roux" as opposed to your father's LNAB.
In short... I (and your father's profile) would really need more to go on in more confident results.
Personally stating, Paddy's father's information is really mute/generic in nature to even use as well.
I hope I was able to explain the above information/suggestions/feedback okay via text.