Thank you so much for responding. It seems my ancestors have disappeared!! I have a copy of Johann's birth record that states he was born 30 March 1857 in Klein Heuwisch. This record indicates he was born as Klinker. However, Johann's death certificate states he died on 23 November 1945 in Karolinenkoog and his name was Klenke. So I'm not sure which is the correct surname.
I have no birth or death record for his wife, Anna Margaretha Moller (Klenke/Klinker). We believe she was born 27 November 1853 in Weissenmoor and died 12 September 1923 in Karolinenkoog.
Could you also advise me as to where I can find records on the ancestors of both Johann and Anna? I have the names and places of birth and death, but no dates. It appears most of the ancestors were from the Heide area -- such as Blankenmoor, Neuenkirchen, Wesseln, Westerhorn, etc. What I have been able to find only dates back to the late 1700's and I'm hoping earlier records exist. All the information has been found on worldvitalrecords.com. Anything you can share would be greatly appreciated. Again, thank you so much for responding.