Isembard Took was one of the many uncles of Bilbo Baggins.
Isembard was the seventh child of Gerontius "The Old" Took and Adamanta (Chubb) Took. Isembard had six older siblings: Isengrim III, Hildigard, Isumbras IV, Hildigrim, Isembold, and Hildifons; and five younger siblings: Hildibrand, Belladonna, Donnamira, Mirabella, and Isengar. He had a son named Flambard, who was born in TA 2887 (SR 1287). Isembard died in TA 2946 (SR 1346).