Hi my name is Sylvia,I saw your post on the Patterson ancestors in Grayson County. I also am related. My great-great grandmother was Nellie C. Patterson whose parents were Lucy Catharine Hurst and Joseph Patterson. His parents were John Owen Patterson and Eda "Edie" Decker. My mom is huge into researching our family so I have a lot of Decker family information I thought I would share with you.
Eda Decker's parents: Barnett Barney Decker (1778-1838) and Dorcas Smith (1786-1850)
Barnett Barney Decker parents: John Decker (1752-1843) and Ann Loddick (1760-1830)
John Decker parents: Hendrick Decker (1716-1768) and Anne Coleman (1720-1782)
Hendrick Decker parents: Hermanus Decker (1673-1768) and Rachel Delamontagne (1674-1734)
Hermanus Decker parents: Jan Gerritsen Decker (1640-1706) and Heyltje Jacobs (1635-1678)
The ones further back are a little mixed up so as soon as my mom fixes them I can let you know. I hope some of these were helpful to you.