Twice
As of 2017, twice.
No, they did not win a Stanley Cup when Wayne Gretzky was on the team.
No, he did not.
Los Angeles Kings.
The Boston Bruins or L.A Kings?
2012 and 2014
The 2011 Los Angeles Kings won the Stanley Cup as a last place #8 seed
No, he did not win the Stanley Cup.
The Seals did not win a Stanley Cup.
2013: Yes, the Chicago Blackhawks beat the Boston Bruins in 6 games to win the Stanley Cup. 2014: No. The Los Angeles Kings have defeated them in the conference finals.
The Penguins did not win the Stanley Cup in the 80's.
As of 2017, five.