Adamanta Chubb
From Tolkien Gateway
Adamanta Chubb was the wife of Gerontius Took, and they had nine sons and three daughters: Isengrim III, Hildigard, Isumbras IV, Hildigrim, Isembold, Hildifons, Isembard, Hildibrand, Belladonna, Donnamira, Mirabella, Isengar.
Etymology
Adamanta comes from from "adamant", meaning "diamond". Jewel names were common among female Hobbits.
References
- The Lord of the Rings, Appendix C, Took genealogy, pg. 381