I'm looking for information regarding my gggrandmother, Mary Ann (Marianna?) SEHI (SEHE, SEHEY?) who was born in Germany and Married Michael Zimmer. They lived in the Williamsburgh area of Brooklyn, Kings County, NY in the period 1840-1900. I know they had at least three children in Brooklyn: Jacob P., b. 1844; Frederick W., b. 1855 and Mary Josephine, b. 1858. Jacob married Mary Anna Haslach, but I don't know what happened to Frederick or Mary. Anyone with info or links, please let me know so I can get past this solid wall.