Gilbert
1. Grove Karl. 1843--1918, US geologist who pioneered the study of river development and valley erosion
2. Sir Humphrey. ?1539--83, English navigator: founded the colony at St John's, Newfoundland (1583)
3. William. 1540--1603, English physician and physicist, noted for his study of terrestrial magnetism in De Magnete (1600)
4. Sir W(illiam) S(chwenck). 1836--1911, English dramatist, humorist, and librettist. He collaborated (1871--96) with Arthur Sullivan on the famous series of comic operettas, including The Pirates of Penzance (1879), Iolanthe (1882), and The Mikado (1885)
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005