Zech Family Genealogy Forum
Good information in your history on your website. I did not know the father of the Johan Jacob Zech who emmigrated.
Among the grandchildren you listed Ann Catherina Zeck m. Phillip Hart. More info on Phillip Hart. b. 24 Jan 1773 York Co., PA d. 15 Jul 1858 Fairfield Twnsp Crawford Co. PA. Anna Catherine died 31 July 1858 (16 days later). Also in Fairfield Twnshp.
If your interested in expanding all branches of descendants. Let me know and I'll supply a portion of the Hart Geneology.