Grandmother of Bilbo Baggins. Adamanta Chubb married Gerontius, the Old Took. They had twelve children (in order from oldest to youngest): Isengrim III, Hildigard, Isumbras IV, Hildigrim, Isembold, Hildifons, Isembard, Hildibrand, Belladonna (mother of Bilbo Baggins), Donnamira, Mirabella, and Isengar.
Names & Meanings
Adamanta contains the word adamant, a name for a diamond.
The Lord of the Rings, Appendix C: "Took genealogy," page 381
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