We are still in need of a patrilineal descendant of Leonard Bürgi (1675-?) who is said to have married Anna Catherine Facesh, via any of his sons. I believe the following sons are known: Jacob (ca. 1710-1764) and Christian (ca. 1715-ca. 1797), both of whom are said to have immigrated to America. Anybody interested? If so, let me know, I can facilitate the process. Getting Y-DNA from a descendant of Leonard Bürgi could be extremely helpful in placing the stray branches, along with other insight.