Also wrong. ;)

Eomer led the first, Elfhelm the second, and Grimbold the third.

Right-o. Your turn. :)

What is the name of the lands of Rohan which are east of the Entwash?

East Emnet?

Correct, NightKnight, you're up!:D

What word did Rohan originally come from, and what did it mean?

I believe 'Rohan' came from 'Rochande", a Sindarin word meaning...(think, think, think...) either Land of Horses or Green Region...?

Close enough. It was actually Rochand, and it means Horse-land. You're up. :)

ok...
How old was Theodred when he died?

I think he would have been 41.

That's the way I learned math too, Nightknight.
Your turn.:)

Name two kings that lost two sons in war.

Theoden and Folcwine both lost their sons in war.

Folcwine did indeed lose two sons in war; however, Theoden lost only (only!) one. That's enough for any parent, isn't it?

I believe Helm Hammerhand is the other half of the answer; his son Haleth fell "last of all, defending the doors" of Meduseld, and Hama died at Helm's Deep.

Symestreem is correct. Theoden lost, as said, "only" one son, while both Folcwine and Helm lost two.

What is the Eotheod?

The homeland of the Horse-lords prior to moving to Rohan.

Correct. It seems to have been used in a number of different contexts; there a two different locations that are called the Eotheod, although Rohan is not one of them; also, this quote, "There was no great love between Eotheod and the dwarves."

Merry's gift from Eowyn upon leaving Rohan was what, and who did that gift memorialize?

It was a horn which was said to be taken from Scatha's hoard, and I think it memorialized Theoden.

One-half correct. Theoden is wrong.:)

It memorialized Dernhelm.

Well, NightKnight got half the answer correct, Arestevana got the other half correct.

I guess that either one of you can go...whoever goes first wins:)

...and that's me. :D Sorry Arestevana. ;)

What was the name of the man that took kingship over Rohan during the Long Winter?

well...Helm was King during the Long Winter. After winter broke, Frealaf became King

Maybe I should have said illegally took kingship. ;)

Wolf of the Dundendlings

Wulf actually, but yes. Your turn.

This persons Name is similar with "reaper"

Grimbold?

yep!

How many men did Eomer ride out with to destroy Ugluk and his troops?

120.

Correct. And I suppose you were there to witness it? :p

Sure was.
 

Who became king after Helm, and how were they related?

Frealaf, the son of his sister. Who I think was named Hild.

Yes, on all accounts. You're up.

Rohan + Spaceballs!!
 

"I am your sister's uncle's son's grandfather's brother's great-great-great-grandfather's uncle's great-great-grandfather's aunt's uncle's ghost! Unfortunately, I had some traumatic experiences shortly before I died, so while I can remember all that, I can't remember my name!" explained the specter to Eomer in his bedchamber one night. The obliging Eomer went to look up his visitor's identity in the Genealogical Tables of Rohan. What did he find?

Did he possibly find Baldor?