"Visitors in the Commons' gallery couldn't help seeing one woman among so many men," the late cabinet minister Judy LaMarsh lamented in 1969.

'They made no effort to disguise the fact that they regarded me as a curiosity and stared whenever I could be seen.' - Judy LaMarsh, one of Canada's first female cabinet ministers

"But they made no effort to disguise the fact that they regarded me as a curiosity and stared whenever I could be seen."

More than fifty years after Progressive Conservative Ellen Fairclough and LaMarsh, a Liberal, became Canada's first and second female cabinet ministers, women are no longer just sprinkled on the front benches.

Fifteen women from different walks of life took positions Wednesday in the first gender-balanced cabinet in Canadian history, assigned portfolios that will include priority policy files for the new government. The cabinet has 31 members, including Trudeau.

Liberal Cabinet 20151104

Jody Wilson-Raybould is sworn in as the minister of justice and attorney general of Canada during ceremonies at Rideau Hall Wednesday. (Adrian Wyld/Canadian Press)

"Because it's 2015," Trudeau said, when asked about why parity was important to him. A cheer went up in the crowd gathered outside of Rideau Hall.

Jody Wilson-Raybould, a lawyer and former regional chief of the B.C. Assembly of First Nations, was sworn in as attorney general and justice minister, becoming the first aboriginal person to hold the post.

She follows in the footsteps of Tory Kim Campbell and Liberal Anne McLellan. Wilson-Raybould will have to tackle the legalization of marijuana, how to approach physician-assisted death, and the retooling of anti-terror legislation introduced by the Conservatives.

McKenna takes environment portfolio

Ottawa lawyer and NGO director Catherine McKenna takes on the environment and climate change portfolio, just as world leaders prepare to meet in Paris for international climate change talks.

McKenna's win over popular NDP MP Paul Dewar in downtown Ottawa was one of the most stunning local victories of the 2015 election.

LIB Catherine McKenna Ottawa Centre MP

Newcomer Catherine McKenna takes on the all-important environment portfolio. (Geoff Robbins/Getty)

Former journalist and media manager Chrystia Freeland is the trade minister, the first woman in the job since Pat Carney held the post in Brian Mulroney's Progressive Conservative government in the 1980s. She will have the finalization of the Trans-Pacific Partnership on her plate.

Other women in cabinet include longtime MP Carolyn Bennett as minister of indigenous and northern affairs and former Manitoba politician and geoscientist MaryAnn Mihychuk as employment, workforce development and labour minister.

"This means that there's opportunity for all Canadians, to be able to fulfil their potential, whatever that is," said Liberal MP and former cabinet minister Hedy Fry.

LIB MP Maryam Monsef Minister of Democratic Institutions Trudeau cabinet

Ontario MP Maryam Monsef immigrated to Canada from Afghanistan as a child and will be head of democratic institutions in Justin Trudeau's new cabinet. (Chris Wattie/Reuters)

"That's a strong message that I think he gave with his cabinet."

Trudeau's commitment to gender parity appears to have fizzled in assembling cabinet committees, the bodies that help plan the government's policy direction. The new "agenda and results" committee, chaired by Trudeau himself, features only four women out of 11 ministers. The Treasury Board committee has only three out of 11.

After former Conservative prime minister Stephen Harper's 2013 cabinet shuffle, women held 12 of 39 posts, or just under one-third.

Chief of staff cheered

The overall swearing-in ceremony highlighted the roles of several other key women, including Clerk of the Privy Council Janice Charette, a Harper appointee.

Trudeau's incoming chief of staff, Katie Telford, was cheered by Liberal activists as she walked up the drive to Rideau Hall before the swearing-in. She is only the second woman in to hold that job.

Ontario LIB MP Carolyn Bennett Indigenous and Northern Affairs minister Nov 4 2015

Veteran MP Carolyn Bennett will move from being aboriginal affairs critic to Minister of Indigenous and Northern Affairs. (Chris Wattie/Reuters)

Former governors general Michaelle Jean and Adrienne Clarkson were given prominent seats at the event.

Two young Inuit girls won over the gathering inside Rideau Hall's main ballroom with a throat-singing performance that ended in joyful giggles.

LIB Chrystia Freeland Ontario MP

Chrystia Freeland is the new trade minister, the first woman in the job since Pat Carney held the post in Brian Mulroney's government. (Chris Wattie/Reuters)

LaMarsh, who held three cabinet posts in the government of Lester Pearson, said that other qualified women at the time weren't even considered for cabinet because she had taken the spot.

"It simply never occurred to Pearson that there could be more than one woman in the cabinet," she once wrote in a newspaper article.

"He looked at the nominee and only secondly at ability."

LIB MaryAnn Mihychuk Manitoba MP

Manitoba Liberal MP MaryAnn Mihychuk is a geoscientist and former member of the Manitoba Legislature who will serve as minister of employment, workforce development and labour. (Chris Wattie/Reuters)