label if each is essential or nonessential

are these correct and which sentence needs a comma.

1. mickey was named after the catcher mickey cochrane who made it into the hall of fame ( nonessential)

2. mantle's father who worked in the lead mines had played semi-pro ball. (nonessential)

3. mantle who was named the most valuable player 3 times also played in 16 all-star games. (essential)

1 answer

#1 is correct; 2 and 3 are not.

http://owl.english.purdue.edu/owl/resource/607/05/

Commas are needed for non-essential clauses (before and after), but not for essential clauses.