The answer to your first question is found in Appendix A (RotK):
Quote:
In the last year of the Third Age he [Éomer] wedded Lothíriel, daughter of Imrahil [Prince of Dol Amroth].
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'Mercy!' cried Gandalf. 'If the giving of information is to be the cure of your inquisitiveness, I shall spend all the rest of my days in answering you. What more do you want to know?' 'The whole history of Middle-earth..
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