Names do not have contractions

I don't know who told you that, but it's silly.

Some classic rock examples:

Eli's coming/ Hide your heart, girl (Eli is)

--Three Dog Night

Wo wo wo/ Jamie's Crying (Jamie is)

--Van Halen

Janie's Got a Gun (Janie has)

--Aerosmith

Bonus: Bob's your uncle (Bob is)

--Phrase commonly used in UK and beyond for "and there it is" or "and there you have it" or "it's done"

Examples could fill a library. Charlie's coming over at six, and Elsie's coming with him, etc. This usage is super common in daily English speech.

/wordnerd