I am facing issue with the Modifiers when there is a combination of [Adjective+Adjective+noun - in which two adjectives modify the noun. The other scenario is [Adverb+Adjective+Noun]- in which adverb modifies the adjective, ehich in turn modifies the noun.

These two do no mean the same thing...E.g.,

for first scenario -

James Joyce is Max's Supposed Irish Ancestor

For second scenario -
Max's grandmother is his supposedly Irish ancestor.

Please clarify the difference.

Source - MGMAT SC (Pg 82)
Regards,
Suruchi