Hi Janet, Small differences are common, especially if your information from the U.S. of his birthdate comes from a calculated date from an age at death. My ancester Johannes ZIMMERMANN (John ZIMMERMAN) in the baptismal records at Wattenwil, Canton Bern, is listed as born 7 May 1802 and baptized on the 16th. Both his tombstone and church records where he died in Ragersville, Tuscarawas Co., OH list he died 29 Dec. 1870, age 68 years, 7 months, 26 days. [= 3 May 1802] John wife Elisabeth WENGER in the church records was born 22 Dec. 1798, bap. 30 December. Her cemetery inscription gives died 3 Apr. 1878, age 79y, 3mo, 8d. [= 25/6 Dec. 1798] U.S. church records state she died was born 25 Dec. 1798, died 2 Apr. 1878, age 79y, 3m, 2d. John's brother Daniel in the Swiss church records was born 28 Nov. 1791, bap. 9 December. His cemetery inscription is died 16 Oct. 1843, age 51y, 11m, 5d. [= 11 Nov. 1791] If you have U.S. sources showing the village of origin, then by examining those church records, you should be able to determine if you have the correct family, or just a coincidence of others of the same names born within a few days at the same village. If what you do not know their village of origin from U.S. sources, and that is what you are trying to verify--that you have the correct village, then look at their neigbors in the U.S. If you can find some of them were from the same village by mathing up their records, and also find no later records (marriages, deaths) for your presumed ancestors at that village in Switzerland, you probably have the right family. It is not all uncommon for a marriage date to be "moved" to an earlier time, if the first child was born before the actual marriage. Sometimes this wasn't done by the couple themselves, and may have been well known among their children, but done by the children or grandchildren to "hide" the fact from the generation younger than they were. Rick Saunders http://genealogypro.com/fsaunders.html