The first identification of Westchester County with the three years' volunteers comes on the rolls of the J^ourth New York Cavalry, which was mustered by companies, beginning August 10 and ending November 15, 1861. The muster-rolls of the regiment disclose the following names :

The non-coiiimissioned stafT has (from Yoiikers) : Sergcimt-Major, lieinliard Kuehl ; Hospital Stewards, Max Leehler and Charles Reiss; Color Sergeant, T. R. Dodge ; Veterinary Surgeons, F. II. Walter and Rudolph Rodenhausen ; Quartermaster-Sergeant, John R. Suiter ; Commissary-Sergeant, t'liailes E. Oormoer.

[N. B. -- The muster-roll of the above men in the State at^utant-gencral's olflce does not show the certificate of the United States mustering officer, nor is it dated ; but the men served, as far as can be ascertiiined].

The company rolls are more regular in form, and the following is their report as affecting Westchester County;

Oimpiiiiy B (frum Yimiers). -- Captain, Wm. R Parnell; First Lieuttnant, Christopher Dolan ; Non-Commi.ssioned Officers, C. R. Frampton, James Mcl'owell, T. II. Philipsen, Henry T. Clench, Duncan Murchison, August Ittmann, John Crean, Michael Cogan, William Ilillman, James P. Mist, Kniil liossart, Charles Dingier, Francis H. Tarleton, Charles Kirk, Martin Rabin, Merritt Livingston, Dennis Costollo, John McAdams.

Private soldiers : Michael Barry, .\lbert Rurbank, William Bren, Peter Burns, Peter Brown, Thomas Brady, Owen Creally, John Cunningham, Patrick Coffey, William Crozier, Thomas Conroy, William Cas.«, Fred. Delinger, Hudolph Dcimar, Jacob Da Costa, Edward Durier, William Davis, John Freeman, Jlichael Fanning, John Geary, Matthew Guinan, Joseph tiarry, Michael Hirlig, Michael Hyland, Patrick Joyce, Charles JttCol>, John Johnson, John Kuntze, Jacob Kern, August Koch, Charles