THOMAS

See also:

• FREDERICK
• FREDERICK (Mod. Ger. Friedrich; Ital. Federigo; Fr. Frederic and Federic; M.H.G. Friderich; O.H.G. Fridurih, " king or lord of peace," from O.H.G. fridu, A.S. frith, " peace," and rfh " rich," " a ruler," for derivation of which see HENRY)

FREDERICK

See also:

• THOMAS FREDERICK COLBY (1784-1852)

COLBY (1784-1852)  , British major-general and director of ordnance survey, was born at St Margaret's, Rochester, on the 1st of September 1784, a member of a South Wales family . Entering the Royal Engineers he began in 1802 a life-long connexion with the Ordnance Survey department . His most important work was the survey of Ireland . This he planned in 1824, and was engaged upon it until 1846 . The last sheets of this survey were almost ready for issue in that year when he reached the rank of major-general, and according to the rules of the service had to vacate his survey appointment . He was the inventor of the compensation bar, an apparatus used in base-measurements . He died at New Brighton on the 9th of October 1852 .