The spouse of a neo-Nazi involved in an anti-Semitic demonstration outside the New South Wales Parliament has gone into hiding following public uproar over her husband’s exposure.

Nathalia Feyherb Gruter, a dance instructor, is married to Matthew Gruter, a civil engineer identified by the anti-fascist organization White Rose Society as a leading figure in the National Socialist Network.

After being revealed as a neo-Nazi, Matthew Gruter has restricted his social media profiles.

In response, Nathalia, who had been cultivating a health, fitness, and lifestyle influencer persona with over 20,000 Instagram followers, has also taken steps to protect her online presence.

She has not only made her accounts private but also turned off comments on posts that feature her husband.

While her LinkedIn profile indicates she worked at a dance studio on Sydney’s lower north shore, the studio director confirmed she is no longer employed there.

‘She left to have a baby and I haven’t seen her in weeks,’ they said.

Within hours of her husband being outed on Thursday, Nathalia posted photos of a jacaranda tree to her Instagram Story, captioned ‘evening walks’.

Dance instructor Nathalia Feyherb Gruter is married to civil engineer Matthew Gruter, who was unmasked on Thursday as a senior member of the National Socialist Network

Several NSN members have been identified after appearing unmasked at an anti-Jewish protest outside NSW Parliament

A former friend who attended the Waterfront dance school in Cape Town with Nathalia in 2017 told the Daily Mail: ‘She was really sweet – a bit shy. She’s always been really into fitness. 

‘I was honestly shocked to hear she’s married to him. She did a lot of modelling back then – lingerie stuff, too.’

Mr Gruter lists his employer as multinational engineering and consulting firm Aurecon, where he is described as a senior civil engineer in water and wastewater.

He has been photographed wearing a silver bracelet engraved with ‘Blood and Honour’, a slogan historically associated with the Hitler Youth and repeatedly chanted at the Parliament House rally.

It is unclear whether his employment or Australian sponsorship has been terminated following the exposure of his extremist views.

The Daily Mail does not suggest Nathalia is racist, simply that she is married to a member of a neo-Nazi group.

Another NSN member, Jack Eltis, 28, an air-conditioning installer from Sydney’s west who openly praises Hitler and refers to Germany as the ‘motherland’, was also at the protest. 

He became a father in 2022 with his now former partner, who we do not suggest holds racist views herself.

Within hours of her husband being outed on Thursday, Nathalia posted photos of a jacaranda tree to her Instagram Story, captioned ‘evening walks’

Nathalia’s locked Instagram emphasises her commitment to wholesome content. However, an old friend from South Africa reveals she used to do ‘a lot of modelling – lingerie stuff, too’

The NSN leadership actively promotes members starting families at a young age. 

In an online stream, leader Thomas Sewell said: ‘This is a future we want for our children in the ethnostate we’re creating. I’ll be encouraging my kids to get married at 18, 19, 20 years old to make sure they’re having children as young as possible.’

In encrypted Telegram chats, female members adopt a ‘tradwife’ persona, championing motherhood as their primary duty while sharing photos of themselves in modest dress. 

‘What a wonderful year it’s been… welcoming so many healthy white babies,’ one caption reads.

Jack Eltis, 28, an air-conditioning installer from Sydney’s west who openly praises Hitler and refers to Germany as the ‘motherland’, was also at the protest. He became a father in 2022 with his now former partner, who we do not suggest holds racist views herself 

Eltis is pictured addressing the neo-Nazi rally at NSW Parliament

Eltis’ parents publicly distanced themselves from their son after being targeted online.

‘As some of you know, our son Jack Eltis has involved himself in a neo-Nazi organisation,’ his father Matt wrote.

‘None of our family condone or support this organisation. Jack is a grown adult and has made his decisions… Life is short, be kind to everyone.’

Family photos show Eltis as a cheerful teenager with braces, celebrating birthdays with relatives and posing with his pregnant partner in 2022 – a stark contrast to the black-clad men chanting ‘Blood and Honour’ at last weekend’s rally.

In February, concerned family members spoke out after learning their sister was in a relationship with Gabe Seymour, a former University of Queensland pharmacy student and head of NSN’s Queensland chapter.

In February, concerned family members spoke out after learning their sister was in a relationship with Gabe Seymour, the head of NSN’s Queensland chapter

In January 2024, brothers Toby and Curtis received a message saying their sister had given birth to a baby boy with Seymour. 

They told Four Corners they realised they had ‘completely lost’ both their sister and nephew to an extremist world.

‘Most of these people are being indoctrinated into these kinds of groups,’ Curtis said.

‘This is someone now growing up around that, which is the scary part – so that you don’t question it.’

They no longer speak to her but hope she will one day return to the family.

‘There’s always a part of me that wants to still help her, especially now that she has a kid,’ Toby said.

The exposure of NSN members comes as its leader Sewell walked free from court on Thursday – met by protesters chanting ‘Nazi scum off our streets’ – two months after his first bid for bail was rejected.

The father of two secured release while awaiting trial on 25 charges, including allegedly assaulting multiple people at a sacred First Nations site.

Sewell, 32, hired a top barrister for the second bail hearing in Melbourne’s Supreme Court.

After spending 72 days on remand following his September 2 arrest outside Melbourne Magistrates’ Court, a judge granted bail on Thursday morning.

Sewell’s fiancée Rebecca Konstantinou provided a $20,000 surety, saying it came from her own savings and contributions from family and friends. 

The Balwyn High School alum, who shares two daughters with Sewell, has remained loyal to him despite her family’s disapproval.

Her father, whom the Daily Mail has chosen not to name, said the family was devastated to see her entangled with Sewell.

‘We are in an incredibly difficult situation with our daughter caught up with him,’ he said from behind a security door at the family home in September.

‘We do not share racist views. It’s tough because she has children with him, and we don’t want to lose the relationship with our granddaughters.’

He confirmed the family had minimal contact with her but were holding out hope she would eventually break free from Sewell.

Ms Konstantinou – once known as Lee – has accompanied Sewell to numerous court appearances, often barefaced and wearing the same peasant-style dress.

Unearthed photos from 2013 show a very different young woman – copper hair, a graphic tee, and a carefree smile at Melbourne dive bar Liberty Social – a far cry from the tradwife image she now projects.

Neo-Nazi Thomas Sewell is engaged to Rebecca Konstantinou, who was seen supporting him at the Supreme Court of Victoria in Melbourne on Thursday

Rebecca Konstantinou, then known as Bec Lee, is pictured with a friend at a Melbourne dive bar in 2013 – a world away from the tradwife image she puts forward today

She has previously described Sewell as a devoted partner and father, providing a glowing testimonial at a 2021 court hearing after his arrest for attacking a group of hikers.

The Daily Mail does not suggest Ms Konstantinou is racist, simply that she is engaged to a neo-Nazi, and has supported him outside court. 

Sewell is charged with multiple offences over the August 31 Camp Sovereignty attack, including violent disorder, affray, discharging a missile and assault by kicking.

Prosecutors allege he led about 30 men towards the protest camp, shouting ‘let’s get ’em’. 

At least seven people were assaulted: one victim was held down and kicked; another struck with a pole and punched; a third required seven staples after being kicked in the head.

Prosecutors argued Sewell poses a risk to public safety as leader of a group with a long history of hate-fuelled violence.

But his barrister, Dermot Dann KC, argued it would be unfair to keep Sewell behind bars when 14 co-accused had already been granted bail, noting a trial may not occur for two years.

Justice Elliott ultimately agreed, ordering Sewell’s release under strict conditions.