Who’s that character Morwen that ex-Shortland St. star Robyn Malcolm is going to play?
According to Saint of Killers:
“…it’s mentioned in the appendix A, section Two “The House of Eorl”. It says “….but Eowyn was slender and tall, with a grace and pride that came to her out of the South from Morwen of Lossarnach, whom the Rohirrim had called Steelsheen.” pg. 437 of the Ballantine paperback edition.
I also found an entry in the Tolkien Encyclopedia which says that she wedded Thengel of Rohan, and it was the first union of Dunedain and Rohirrim.
Morwen bore him Theoden and Theodwyn, among others.
Thanks, Saint. You’re a saint!

Mormegil pointed this out, though….
“If it is indeed Theoden’s mother who will be in the film she would be 97 years old. This seems a little silly as Theoden himself is supposedly to old to even leave his throne room. The most likely answer is that the Morwen character is someone who was named after the now dead queen.

Just a thought…”