Lewis family

The Lewis family is a Canadian political family whose public history spans labour activism, social-democratic politics, journalism, diplomacy, international development, and human-rights advocacy. The family’s roots are described as Polish-Jewish, Belarusian-Jewish, and more broadly Ashkenazi Jewish. Its Canadian political lineage begins with Morris Lewis, born Mojżesz Łoś and also known as Moishe Losz, who became involved with the socialist General Jewish Labour Bund in Eastern Europe before moving to Montreal in May 1921 after the Polish-Soviet War. He anglicized the family name to Lewis and married Rose Lazarovitch. Their son David Lewis became one of the central architects of modern Canadian social democracy. David Lewis was a lawyer, labour organizer, and politician. He was active in the Co-operative Commonwealth Federation (CCF), serving in senior national roles before helping establish the Canadian Labour Congress in 1956 and the New Democratic Party (NDP) in 1961. He represented York South in the House of Commons and became the NDP’s second federal leader in 1971, serving until 1975. His leadership placed the family at the centre of Canadian parliamentary socialism during a period of significant institutional change. David and his son Stephen also formed one of the earliest father-and-son combinations to lead Canadian political parties at the same time, with Stephen leading the Ontario NDP while David led the federal NDP. The next generation extended the family’s influence through several different forms of public service. Stephen Lewis served as leader of the Ontario NDP from 1970 to 1978 and represented Scarborough West in the Legislative Assembly of Ontario. He later became Canada’s ambassador to the United Nations from 1984 to 1988 under Prime Minister Brian Mulroney, demonstrating the family’s reach beyond partisan politics into diplomacy. From 2001 to 2006, he served as the United Nations Special Envoy for HIV/AIDS in Africa. His international work, particularly on HIV/AIDS, development, and global inequality, became a major part of his public identity. Stephen’s wife, Michele Landsberg, is a journalist, author, and activist. Their children include Avi Lewis, Ilana Landsberg-Lewis, and Jenny Lewis. Avi Lewis has worked as a journalist, broadcaster, filmmaker, and activist and is identified in the supplied reference material as leader of the federal NDP from 2026. He is married to author and social activist Naomi Klein, whose work focuses on corporate globalization, capitalism, organized labour, climate politics, and related social movements. Ilana Landsberg-Lewis is a labour and human-rights lawyer and activist who served as executive director of the Stephen Lewis Foundation and was identified in the reference material as becoming chief executive officer of Rainbow Railroad in 2026. Jenny Lewis is a Canadian casting director. Other members have contributed through party organization, labour relations, public policy, and communications. Michael Lewis, David Lewis’s son, served as provincial secretary of the Ontario NDP during the 1980s and 1990s and was a longtime political director of the United Steel Workers union in Canada. Janet Solberg, David Lewis’s daughter, was president of the Ontario NDP during the 1980s and 1990s and worked in research, political policy, communications, and labour arbitration. David’s daughter Nina Lewis married architect Daniel Libeskind in 1969. The family is therefore best understood not as a commercial brand but as a multigenerational Canadian public-life network. Its significance comes from the continuity of political and social commitments across generations, while its members have operated independently in elected office, labour organizations, journalism, academia-adjacent policy work, diplomacy, international development, and civil society. The family is frequently discussed alongside other prominent Canadian political families, but its distinctive profile is rooted in Jewish immigrant history and the development of organized labour and social democracy in Canada.

The Lewis family’s Canadian story is rooted in Jewish migration, labour politics, and the institutions of Canadian social democracy. Morris Lewis, originally named Mojżesz Łoś and also known as Moishe Losz, was involved with the socialist General Jewish Labour Bund in Eastern Europe. Following the Polish-Soviet War, he moved to Montreal in May 1921 and adopted the surname Lewis in English-language Canadian life. He married Rose Lazarovitch and became the father of David Lewis. David Lewis developed into a lawyer, labour organizer, and major figure in the CCF, the predecessor of the NDP. His early public career was connected to the organization of the Canadian labour and social-democratic movement. He held senior positions in the CCF, including national secretary, national chairman, and national president, and participated in the creation of the Canadian Labour Congress in 1956. He was also involved in the formation of the NDP in 1961, helping transform the CCF’s political tradition into a new party linked institutionally to organized labour. David represented York South in the Canadian House of Commons in separate periods beginning in 1962 and continuing from 1965 to 1974. In 1971 he became the NDP’s second federal leader, serving until 1975. His son Stephen was simultaneously leader of the Ontario NDP from 1970 to 1978, creating a notable father-and-son presence at the head of provincial and federal social-democratic parties. Stephen represented Scarborough West in the Ontario legislature and served as Leader of the Official Opposition in Ontario from 1975 to 1977. Stephen Lewis later moved from provincial politics into international public service. He served as Canada’s ambassador to the United Nations from 1984 to 1988 and later became the United Nations Special Envoy for HIV/AIDS in Africa from 2001 to 2006. His international career broadened the family’s public profile from Canadian party politics and labour relations to global health, development, and inequality. His wife, Michele Landsberg, contributed through journalism, authorship, and activism. The family’s third generation continued this public orientation through multiple professional paths. Michael Lewis worked in Ontario NDP organization and became a senior labour-union political strategist. Janet Solberg held leadership and advisory roles in the Ontario NDP and worked in public policy, communications, research, and arbitration. Ilana Landsberg-Lewis pursued labour and human-rights law and led the Stephen Lewis Foundation before the supplied reference material identified her appointment as chief executive officer of Rainbow Railroad in 2026. Jenny Lewis worked as a casting director. Avi Lewis became known as a journalist, broadcaster, filmmaker, and activist. His marriage to author and social activist Naomi Klein connected the family to international debates over corporate globalization, capitalism, climate politics, organized labour, and social movements. The supplied reference material identifies Avi Lewis as federal NDP leader from 2026. As a result, the family’s history extends from immigrant labour activism and the CCF through the NDP, Canadian diplomacy, international HIV/AIDS advocacy, journalism, and contemporary human-rights organizations. It remains a political-family subject rather than a commercial enterprise, with influence derived from public offices, institutions, and advocacy networks rather than from shared ownership of a business.

• 2026

  Avi Lewis identified as federal NDP leader

  [1]Lewis family (Canada)en.wikipedia.org

  The supplied reference material identifies Avi Lewis as leader of the New Democratic Party of Canada from 2026.

• 2001

  Stephen Lewis becomes UN Special Envoy for HIV/AIDS in Africa

  [1]Lewis family (Canada)en.wikipedia.org

  Stephen Lewis served as the United Nations Special Envoy for HIV/AIDS in Africa from 2001 to 2006.

• 1984

  Stephen Lewis becomes Canada’s UN ambassador

  [1]Lewis family (Canada)en.wikipedia.org

  Stephen Lewis served as Canada’s ambassador to the United Nations from 1984 to 1988.

• 1971

  David Lewis becomes federal NDP leader

  [1]Lewis family (Canada)en.wikipedia.org

  David Lewis became the NDP’s second federal leader, serving through 1975 while his son Stephen led the Ontario party.

• 1970

  Stephen Lewis becomes Ontario NDP leader

  [1]Lewis family (Canada)en.wikipedia.org

  Stephen Lewis led the Ontario NDP from 1970 to 1978 and represented Scarborough West in the provincial legislature.

• 1961

  Formation of the New Democratic Party

  [1]Lewis family (Canada)en.wikipedia.org

  David Lewis helped establish the NDP, the successor to the CCF and the principal federal party associated with the family’s political tradition.

• 1956

  David Lewis helps create the Canadian Labour Congress

  [1]Lewis family (Canada)en.wikipedia.org

  David Lewis participated in the creation of the Canadian Labour Congress, reinforcing his role in organized labour and social-democratic institution building.

• 1921

  Morris Lewis moves to Montreal

  [1]Lewis family (Canada)en.wikipedia.org

  Morris Lewis, formerly Mojżesz Łoś or Moishe Losz, moved to Montreal after the Polish-Soviet War and used the surname Lewis in Canada.

A multigenerational Canadian political and public-service family associated with social democracy, organized labour, international diplomacy, journalism, and human-rights advocacy.

1. 1Lewis family (Canada)en.wikipedia.org