Stanley Mark Diamond founded Jewish Records Indexing – Poland, the world’s largest special interest genealogy group. JRI – Poland was a “second act” in his life, combining his passion for Jewish continuity with his expertise as a Montreal business leader with a Harvard MBA.

Diamond died in Montreal on Dec.18. He was 91.

JRI – Poland grew over 30 years to approximately 170 volunteers on six continents around the world and amassed a database that now has 6.4 million records reflecting the lives of Polish Jews since the 1500s.

“Stanley had a two-fold superpower,” acting JRI – Poland executive director Robinn Magid says. “He was able to care about people and draw things out of them, but also to contribute and help. They go hand in handz but are not often found in the same person.”

In 1991, Diamond’s nephew was diagnosed as a carrier of beta thalassemia, and he created a family tree to alert relatives about their probability of having the gene. At the time, he was doing consulting work after selling his decorative ceiling business, Intalite, in 1986.

He began attending genealogy conferences and realized that the largest group of Jewish genealogists were Jews who traced their roots to the current or former country of Poland. In 1995, he partnered with two technology experts who had the skills to develop a website that could also incorporate archival information. Several months later, Diamond travelled to Poland with a colleague and persuaded the Polish State Archives to allow JRI – Poland to index his family’s ancestral town’s records. Just four months later, he returned to Poland with a printout of 40,000 entries, to the astonishment of the archives’ director, who then understood the value of the project.

Diamond hoped JRI – Poland would help people capture the essence of their ancestors. In addition to preserving their names, he wanted families to learn about their lives and about their values.

“JRI – Poland specializes in solving puzzles,” says Magid.

While some of these puzzles solve simple questions about basic family history, others are much more complex. The group has helped save lives by sharing information on hereditary health conditions. They have been able to repair damage caused by the Holocaust, connecting and reconnecting fragmented families who lost each other or did not know they even existed. They have assisted people who wanted to prove that they were Jewish and were entitled to an Orthodox Jewish wedding.

The group also assists Jews at risk. “Three years ago, when Putin invaded Ukraine, we saw an upswing in people writing us from Ukraine, Belarus, Russia, Poland and other places saying they needed to prove their Polish-Jewish heritage,” says Magid. “In the past we’ve had people from Venezuela and from various South American countries like Argentina. They are in countries that have gone through turmoil and feel at risk. They are either trying to prove their halachic Jewish heritage and move to Israel, or they are trying to prove their Polish-Jewish heritage to get a Polish passport and move to the European Union. These are the people who Stanley personally helped.”

Diamond also provided his research expertise for the television series Finding your Roots and Who Do You Think You Are?, and in 2016 located documentation for the Guinness organization that verified that Israeli Holocaust survivor Yisrael Kristal was the world’s oldest living man at age 112.

Diamond was born in Montreal to Harry and Annie Diamond. He attended West Hill High School and McGill, and graduated from Harvard Business School in 1958. He was an exceptional baseball player, playing in a semi-pro league. He met his wife, Ruth Peerlkamp, at a party, and they were married for 59 years.

“Stanley Diamond’s first passion was for his family, but that soon spread to your families,” daughter Jessika said in her eulogy. “He loved doing for others, advising other genealogists, teaching, speaking out on the importance of genetic testing, reuniting families separated in the Holocaust, finding lost heirs and potential bone marrow matches.” 

In 2021, Yad Vashem granted JRI – Poland third-party access to their Pages of Testimony. Diamond advocated for the organization to support amateur genealogists who could provide hard data, and they agreed for the first time.  

“He was passionate about his work and personally devoted to helping anyone who asked for assistance,” his daughter Rachel said. “He was president of the Jewish Genealogical Society of Montreal, and he was honored by the governor general of Canada with the Meritorious Service Medal. He considered it to be the crowning achievement of his second career. He had a huge footprint that will be felt for a very long time.” 

“It’s hard to imagine doing our jobs without Stanley Diamond advocating and referring and providing knowledge in the background of what we do for people,” said Janice Rosen, director of the Alex Dworkin Canadian Jewish Archives. “He was the go-to person in so many ways. The European side, the Canadian side. He was so determined to ferret out information to help people. He was involved in so many aspects of genealogy which grew out of his need to know about his own genetic background, and he made the whole world benefit from it.”

“We say people were lifetime learners. But more importantly, he was a lifetime contributor. And I don’t think we say that about many people,” said Magid. “He wanted to make a difference because he could envision something and get the right people to do it. And that is unique. He understood that we are part of a chain of continuity of the Jewish people.”

Diamond is survived by his wife, Ruth, daughters Paula, Rachel and Jessika, and his grandchildren.

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