[Pitchwife]

Argh! Can it be Lobelia Sackville-Baggins?

What I wanted should be mine, - Bag-End
thwarted first and second time.
- first when Bilbo came back from his journey with the dwarves, second when he left Bag-End to Frodo;
Third time lucky's what they say,
- at last, after sixty years of waiting, Frodo sold it to her and Lotho when he went on the quest;
but shadows grew from that bright day.
- they didn't enjoy their property very long before Sharkey & his ruffians took over.

Twice denied,
but now my pride,
was satisfied.
I should have cried. - see above.

Victory turned into dust.
First a boom and then a bust.
Taken captive, basely caught,
for good or ill I stood and fought.
- she gave Sharkey's men a taste of her umbrella and got busted for it.

Twice denied, then I succeed,
Now defied and twice bereaved
- not only did she give up Bag-End again, but she had lost her son (killed by Wormtongue) and husband (died before).
Still not all's bad that hardship sends,
I've lost it all but made some friends.
- she was reconciled with Frodo and became quite popular for her resistance to the ruffians (also because of her charitable testament).