They were both in a Kayfabe ( Made Up ) relationship for WWE
Programming.
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In WWE, Dave Finlay is his (kayfabe) father In WWE, Dave Finlay
is his (kayfabe) father
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The term kayfabe is used to describe events of a storyline that
appear to be true but are not true in real life. For example the
marriage of Edge and Vickie is "kayfabe" or "staged" because it
appears real on screen week after week but in real life it is not
so.