Gerardus was born in 1740. Gerardus Ryker ... He passed away in 1781.
Note: Gerardus Ryker was listed as a cordwainer at the time of his marriage in New York in 1762. He immigrated to Kentucky in 1780 from Berkeley Co., VA and was part of the "Low Dutch Colony" in Shelby and Henry Counties in Kentucky. He was killed by Indians in the Long Run Massacre, also known as Floyd's Defeat, September 15, 1781 near Eastwood in Jefferson County, Kentucky.  The Long Run massacre was a major incident in the series of battles in which early settlers in Kentucky fought Indians and their British allies on the western frontier during the Revolutionary War. Long Run is located near Eastwood in Jefferson County, Kentucky. In September 1781 Maj. Bland Ballard discovered Indian signs near Squire Boone's Painted Stone Station, near what is now Shelbyville. He warned the settlers there and at Beargrass Station to move to Lynn Station, which was a more secure area. For unknown reasons, Boone's and several other families delayed moving for two days. When they finally left the station on September 14, 1781, they were surrounded at Long Run Creek by a large party of Indians reinforced by British soldiers under the command of Capt. Alexander McKee. An estimated sixty people were killed by the Indians; only a handful, including Squire Boone, escaped. 
Died September 15, 1781 in "Long Run Massacre", Eastwood, KY
Died September 15, 1781 in Bullskin, Shelby, Kentucky, United States
Painted Rock Station, the site of the original attack, was part of Jefferson County, Kentucky, when it was settled. The site of the massacre is just over the county line in Jefferson, while the station is now located in Shelby county. See sources below for details.
↑ From [UL:The Kentucky Encyclopedia:UL] edited by John E. Kleber (University Press of Kentucky, 1992): LONG RUN MASSACRE.
↑ See Lou Catherine Ciore, "Long Run Massacre, Register 10 (Jan. 1912): 75-6.
It may be possible to confirm family relationships with Gerardus by comparing test results with other
carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Gerardus:
Ryker-1 and Rycken-4 appear to represent the same person because: This son can be merged now. No tree conflicts. Keep the birth Closter, Bergen, New Jersey. The siblings are all Rycken, so I am inclined to keep that as LNAB. And then his children are all Ryker, as he moved away from New Netherland, so it makes sense that he would have Americanized his name as Ryker later in his adult life, so we should probably make that the current last name. Thanks!