I would suggest you assume you were always there, and then you arrived at Kadhrim, or at the Sanctuary or at Endor and meet the people. Even if you were not always there you can appear one of this places and talk to the localo guy telling the story of how you arrived in aboat, or from the disturbance created by the magic of one spell used in the war, or whatever.
High King of the Noldor in Middle-Earth
Honorary Knight of the Pointy Shiney
"... All those moments will be lost in time, like tears in rain. Time to die"