Debra, I know of two Simon Younker/Yunker. One is Simon Yunker b. abt 1780 in Germany and married Jeminia "Nina" Horton.The other Simon Yunker showed up on the 1790 census in Northampton County Pennsylvania.The census showed that there were three males under 16 years of age and one males over 16 years of age which is this Simon.Also shows three females, one his wife.Your Simon would only be about 10 years old.Some beleive that there is a possibility that this Simon married Anna ?? in Germany and immigrated to the U.S. in 1787 with his family. Our Simon could be a son of his and was about 7 years old.Therefore, Simon b. abt 1780 m. Nina Horton, Peter b. 7 Jan 1795 m. Lucinda, and John b. abt 1797 m. Edith Gault all could be brothers.What to you think?