The final Ringed Knight is in the area near Gael boss fight, in the desert of Ash. After you touch Filianore.
Mon Jul 24, 2017 6:36 pm
You can also get the Lapp titanite slab twice. When initially starting The Ringed City, go along as you will and purposefully miss Lapp's first appearance and run down to the swamp and obtain the slab. Then, after you grab it, go trigger Lapp and move his questline all the way towards where he mentions the slab. You can then go down, die to the Harald Knight, and then he will gift you another slab.
Mon Aug 07, 2017 1:00 pm
nope, when you start his quest, and you already have it, he will skip his dialogue and the say "Ohh, look at you, you found the treasure, dashing, just dashing, you'll make good use of it I'm sure" Just tested it.