I have a Seidler connection in NYC as well. Supposedly they lived by the Grand Concourse somewhere. I have a Lydia Seidler who was the daughter of what we believed was a Henry? Seidler who married we think was Matilda Lange. Lydia had a brother as well but don't know anything more about them. Matilda had 2 sisters Lena and Ida. Ida Theresa Sophia Lange married Charles Schmieder. The Schmieders and Langes seem to come from Meerane area. I have photos mentioning Berlin and also Altenburg. I have the passport for Johanna Lange Ida's mother coming from Meerane between 1867 and 1868. Hopefully we might be related.