I am a descendant of Catharine Keyser (1718-1799) who married Georg Ludwig Horning (Hornung). Catharine was a dau of Pieter Dirck Keyser (1676-1724); & a grdau of Dirck Keyser (1635-1714) - immigrant from Amsterdam. The majority of my info is from "The Keyser Family" by Charles S. Keyser; 1889. I am interested in exchanging info with other Keyser descendants, especially if you have independent sources that verify or correct the 1889 work of Charles S. Keyser. I can also be contacted directly at email@example.com.