Alright,first let's show you where the Sword of White Woe is.Okay,go to Suran.Find the guard tower next to the silt strider near the entrance of town.Go inside and go upstairs.There will be a guard standing in the room.Kill him(taunting first is recommended.)Now once you killed him look under the bed the Sword of White Woe will be laying there.Pick it up.It's an enchanted ebony broadsword that drains their health 1 to 10 points on strike for 30 SECS! It may not seem very good but it's very effective!

Now let's show you where a daedric that's right daedric longsword is and it's pretty simple,go to Suran.Just keep following a trail that leads directly west of Suran on your map it will show a part of land surrounded by water but has 2 trails one leads east and the other one leads west.Follow the east trail of the island going west and you will eventually find Arvel Plantation go directly south of it and you will find Dren Plantation. Find the guard house and go upstairs go through a door leading outside turn right and there will be a guy standing there kill him but have
some kind of paralyze spell if your character is a mage with no armor.If your character has armor and has 100 skill with it just attack him and use the restore health cheat on this page somewhere.You might want to save before killing him just in case.Once you killed him he will have a daedric longsword on him.Take it.It has 4-44 slash damage which is it's best
attack.I don't know the other types of the attack's damage but it's pretty good.

Now to get the daedric dai-katana,from the information of getting the daedric longsword,just go out of the guardhouse and head west i think,and you will come up to a house high in the air with a stairway leading to the door.Go through the shack and there will be a guy standing there.You'll have to kill him. Save before killing him.Use the advice i gave you for killing the guy with the daedric longsword.Once you kill him loot him.He will have a daedric dai-katana take it.It's best attack is chop which does 1-60 DMG! All Done!