"GERARDUS BEEKMAN, M.D., child and second son of Beekman, the Founder, baptised August 17, 1653, died October 10, 1723, married August 29, 1677, Magdalena Abeel of Albany, N.Y., daughter of Stoffel Janse Abeel and Neeltje Janse Croon his wife, born in 1657, died October 20 1745.
In March 1711 Gerardus served as co-executor of the will of John Abeel of Albany, NY along with Abeel's widow. Calendar of NY Wills page 1
Colonel Beekman was a physician and surgeon and resided in New York and Flatbush, Long Island, and occasionally on his estate on the Millstone River, New Jersey. In 1685 he was Justice of Kings County, New York. He was Captain of militia at Flatbush in 1681, and in 1689, he took the oath of allegiance and was appointed Major of all the horse and foot in Kings County as appears by his military commission published in Historical Documents of New York vol xxxvi., p. 142. In 1690 and 1691 he was a member of Leisler's Council. He did not thoroughly agree with Leisler in politics and when Leisler's conduct caused disturbances, Dr. Beekman prepared and delivered an address in pacification of the people, When Colonel Sloughter came here as Deputy Governor in 1691, to succeed Deputy Governor Nicholson, whose government after the accession of William of Orange had been overthrown by Leisler. Dr. Beekman was arrested with Leisler and others, and was seventeen months in prison, but was afterward pardoned. The unfortunate patriot Leisler was hanged. Governor Benjamin Fletcher who succeeded Colonel Sloughter was in turn succeeded by Governor Bellomont. In 1700 Dr Beekman was appointed Lieutenant-Colonel and then Colonel under Richard Coote, Earl of Bellomont." 
A detailed account of the life and activities of Gerard Beekman is found in "The Beekmans of New York: in Politics and Commerce” published in 1956 by the New York Historical Society.
Source: S43 Author: Edmund West, comp. Title: Family Data Collection - Individual Records Publication: Name: Online publication - Provo, UT, USA: Ancestry.com Operations Inc, 2000.; Repository: #R1
Source: S46 Author: Edmund West, comp. Title: Family Data Collection - Births Publication: Name: Online publication - Provo, UT, USA: The Generations Network, Inc., 2001.; Repository: #R1
Source: S85 Author: Ancestry.com Title: U.S., Sons of the American Revolution Membership Applications, 1889-1970 Publication: Name: Ancestry.com Operations, Inc.; Location: Provo, UT, USA; Date: 2011; Repository: #R3 NOTESons of the American Revolution Membership Applications, 1889-1970, Louisville, Kentucky: National Society of the Sons of the American Revolution.
Thank you to Sherry Clendenon for creating WikiTree profile Beekman-107 through the import of Moore - Johnson-tree-Aug2013-2.ged on Aug 17, 2013. Click to the Changes page for the details of edits by Sherry and others.