Hjalmar Leo Mehr was a Swedish

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

 Social Democratic politician

Swedish Social Democratic Party

The Swedish Social Democratic Workers' Party, , contesting elections as 'the Workers' Party – the Social Democrats' , or sometimes referred to just as 'the Social Democrats' and most commonly as Sossarna ; is the oldest and largest political party in Sweden. The party was founded in 1889...

, mayor of Stockholm (1958–1966, 1970–1971) and governor

County Administrative Boards of Sweden

A County Administrative Board is a Government appointed board of a County in Sweden. It is led by a Governor or Landshövding appointed for a term of six years and the list of succession, in most cases, stretches back to 1634 when the counties were created...

 of Stockholm County

Stockholm County

Stockholm County is a county or län on the Baltic sea coast of Sweden. It borders Uppsala County and Södermanland County. It also borders Mälaren and the Baltic Sea. The city of Stockholm is the capital of Sweden. Stockholm County is divided by the historic provinces of Uppland and Södermanland...

 (1971–1977). He promoted many radical socialist welfare state

Welfare state

A welfare state is a "concept of government in which the state plays a key role in the protection and promotion of the economic and social well-being of its citizens. It is based on the principles of equality of opportunity, equitable distribution of wealth, and public responsibility for those...

 policies but is mostly remembered and criticized for the redevelopment of Norrmalm

Redevelopment of Norrmalm

The redevelopment of Norrmalm was a major revision of the city plan for lower Norrmalm in Stockholm, Sweden, which was realised during the 1950s, 1960s, and 1970s. The renewal resulted in the old Klara quarters being replaced for the modern city of Stockholm, according to rigorist CBD ideas, while...

, where main parts of the old Stockholm was demolished.

Hjalmar Mehr's parents Sara and Bernhard Meyerowitch were Russian-Jewish revolutionaries

Russian Social Democratic Labour Party

The Russian Social Democratic Labour Party , also known as Russian Social Democratic Workers' Party or Russian Social Democratic Party, was a revolutionary socialist Russian political party formed in 1898 in Minsk to unite the various revolutionary organizations into one party...

 who after the failed 1905 Russian Revolution fled to Sweden, where Hjalmar was born and named after Hjalmar Branting

Hjalmar Branting

was a Swedish politician. He was the leader of the Swedish Social Democratic Party , and Prime Minister during three separate periods . When Branting came to power in 1920, he was the first Social Democratic Prime Minister of Sweden...

.