A raven with crossed swords was the symbol of a mercenary company. They were not a very well known company, but the rumors about them were not very inviting. However, they were known for completing all but the most difficult of jobs.
Lucas had heard whispers of them amongst the nobility. Or rather his investigations into the more shady nobles. In truth there was so much filth in the nobility that he was amazed the country ran properly at all.
Yes, he had several reports of the goings on of the Raven Mercenary Group except for where they operated from or how they received their jobs. Especially anything that had to do with the last six months.
It was like they completely disappeared. Or rather they became much too good at covering their tracks. The actions that followed Lucas overturning the nobility in a single night had not helped him track Eva's location at all.