Washerwoman - Townsfolk

You start knowing that 1 of 2 players is a particular Townsfolk.

Your ability is very powerful and can lead to a bond of trust between you and the player whose role you learned.
Speak to both people you were told and confirm which one is really that role. It’s important not to immediately tell them the role you saw, as if they are evil, they can simply confirm that they are this role. Instead, try asking them to give you three roles they might be. You can narrow this down to two, then they can tell you which of those two is really their role. Alternately you can count down from three and say the role at the same time.
As you will not get any more information for the rest of the game, you should not be too worried about dying. However, you are still a good player and ideally don’t want to die for no reason. If the role you saw is a powerful one you can role swap and try to draw a Demon kill while protecting your confirmed player.