This Margaret appears only in the Ancestor Files of LDS. I am not convinced that she is attached to this family. This will have to be confirmed. In fact, the 3 Margaret's will have to be confirmed. The records todate (2001) show that the earlier Margaret was still alive when the second Margaret was born. Highly unlikely.
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MyHeritage family tree
Family site: M(a)cKenzie - Kunkel Website
Family tree: 330383-1