Some analytic languages sometimes use the same prepositions for nouns and pronouns,e.g. 'I'm proud OF him' vs. 'I'm proud OF his book'. Agglutinative languages may use the same affix for nouns and pronouns too,such as in Japanese.
However,fusional languages seems to intend to use different declensions for nouns and pronouns,e.g.'JOHN'S book' vs. 'HIS book'. Often,pronouns are inflected irregularly.
So,is there any fusional language where nouns and pronouns share at least one same declension? If pronouns or nouns have more than one declensions,this means at least one of them is the same.
If there is,what is the language?if not,what is the reason?
Ps. I'm an amateur,so in the question there may contain some mistakes;if so,just post it.