Why is it usually "friend of his", but no possessive apostrophe with "friend of Peter"?

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Track title: Puzzle Game 2 Looping

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Chapters
00:00 Why Is It Usually &Quot;Friend Of His&Quot;, But No Possessive Apostrophe With &Quot;Friend Of Peter
01:56 Accepted Answer Score 19
02:58 Answer 2 Score 13
06:37 Answer 3 Score 9
07:22 Answer 4 Score 5
08:56 Answer 5 Score 4
09:56 Thank you

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Tags
#possessives #doublepossessive

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