As I promised last week, when I published the question: "What do Bobby Fischer and Barbra Streisand have in common?", here I am with the answer. As you have already mentioned: Poekie (wikipedia), Brother in law (jewish origin) and Brian (same Erasmus Highschool), that's the correct answer. They both have a jewish origin, although Fischer made occasional hostile comments towards Jews from at least the early 1960s, and they both finished the same Erasmus Highschool in New York.
What you maybe don't know:
Raymond Weinstein (born 25 april, 1941), International Fide Master (title awarded in 1962), attented the same Erasmus Highschool, where he was two grades ahead of Bobby Fischer. Weinstein defeated many top players such as: Reshevsky, Pal Benko, Arthur Bisguier and Robert Byrne, drew with Fischer, but his best result came in 1960-61. He finished 3rd in the US Championship, after Fischer and Lombardy, which gave him the opportunity to play in the Interzonal Tournament, held in Stockholm 1962, though neither he nor Lombardy played.
He had a degree in Psychology, was fluent in many languages and had a very good memory. He travelled to Amsterdam to take his master degree, where he was arrested for assault. Dutch chess author Tim Krabbe has identified the victim as the Dutch psychology professor and International Master Johan Barendregt. Because of this incident he was deported back to United States.
In 1964 he killed an 83-year old man in a nursing home with a razor. Raymond went to trial and was judged menatlly ill. He was confined to a psychiatric hospital in Manhattan's Ward Island, where he remains to this day.
Now, today's Trivia question! Name, from left to right, the five chess personalities you recognize in the following picture:
Bonus question: During which tournament was the picture taken?