I am trying to track down my Pennsylvania ancestors. Henry COOK (b. 1825, d. 1912) married Mary HOLLOWBUSH (or Hollabush) on about 11-27-1851 in a Church of the Brethren in Chester County, PA. I learned just this week that Henry's father is Samuel COOK, who married Hannah REIFSNYDER. I learned this by obtaining a copy of Henry's death certificate. The only other information given about Samuel and Hannah is that they were both born in Prussia. The information on Henry's death certificate came from his son, John Wilson Cook, I, so I believe it is highly credible. Does anyone have Samuel and Hannah COOK in their tree, or know of any other trees having these names? Does anyone know how I can get any information about the Chester County congregation of the Church of the Brethren? I have posted an inquiry on the Brethren's mailing list, as well. I've also reviewed their web site, but can't find any information on this congregation. Any help would be greatly appreciated! Thanks.