Hi Skip,
This is the Function, which is partly working as described in previous posts
=IF(OR(ISNA(MATCH($E$2, tWikiTree[Master ID],0)),INDEX(tWikiTree[WikiTree Link],MATCH($E$2, tWikiTree[Master ID],0))=""),"No Current Link to WikiTree", HYPERLINK(INDEX(tWikiTree[WikiTree Link],MATCH($E$2...