Andreth and Adanel

[Finwe]

Arothir, Malbeth was most definitely of the race of Men, not a Hobbit. I really have no idea where you got that delusion from.

The name of the Hobbit who "wrote reams of good advice" is Dora Baggins, Frodo's aunt. The exact quote from the Fellowship of the Ring is:

For DORA BAGGINS in memory of a LONG correspondence, with love from Bilbo; on a large waste-paper basket. Dora was Drogo's sister and the eldest surviving female relative of Bilbo and Frodo; she was ninety-nine, and had written reams of good advice for more than half a century.