Hi BonnieDownunder, Have checked my lists and suggest you might try Kreisarchiv Nordfriesland, (County Archive) Asmussenstraße 19, 25813 Husum; to Frau Ueck of kreisarchi(at)nordfriesland.de; tel 04841 8062104 or else 04841 8062101. Website:
https://www.nordfriesland.de// - not in English.
I use Google translate; I write in both English and Google-German; I am very polite and business-like, and sometimes I get a reply.
For church archives try:
http://www.archivnordkirche.de/index.php/Nordfriesland.html.
I ask for Baptism (taufen) confirmation (konfirmation), marriage (hieraten) as well as death (toten) records. They may also have family books - back then the church kept a record of all members in family groups; they may, they may not.
I notice their site is not in English, they have three possible contact people; there is no direct mention of a fee, but I always ask what it is (they never seem to want anything to do with Paypal, crefdit card or the like - cash, yes; but a back cheque otherwise. May be different in NordFriesland from my experiences in Dithmarschen and Altona and Hamburg.)
For Danish possibilities try Arkivet ved Dansk Centralbibliotek for Sydslesvig e.V. Norderstraße 59, 24939 Flensburg, addressed to "e Damen und Herren" l(at)dcbib.dk. Same requests with same request for payment method; for same information but in Google-Danish.
Don't forget too that the revolting peasants were all stirred up in 1848, and from then on vast numbers took to the highways down to Hamburg, or the seaways to England and/or USA. There they may have changed their names or gave their last location as something vague such as Schleswig-Holstein. Peter Voss (
http://hans-peter-voss.de/e/index.htm) reckons about 3 Million took off to escape conscription.
All the best