The Cassegrains have been entangled in legal proceedings over the estate of patriarch Gerard for more than a decade.

In February it appeared the High Court had ended the battle.

Felicity Cassegrain, wife of Claude Cassegrain, was partly successful in an appeal to maintain half of The Dairy Farm, a property purchased by her husband. She was, however, required to return to the family company Gerard Cassegrain Co Pty Ltd, Claude's interest in the property which he had transferred into her name for a nominal fee.

In doing so, the High Court overturned a previous decision by the NSW Court of Appeal to cancel Felicity's title to the rural property and return it in its entirety to Gerard Cassegrain Co Pty Ltd.

The Court of Appeal decided on December 18, 2013, that second-eldest sibling Claude Cassegrain had breached his responsibilities to the family company Gerard Cassegrain Co Pty Ltd by using its loan account on October 31, 1993, to buy The Dairy Farm in his and Felicity's name. He subsequently attempted to transfer his half to his wife for a nominal fee.

The judges found, by majority, that Felicity's husband was not her agent in buying the farm. There was also no allegation that Felicity participated in, or knew about, Claude's fraud at the time of the property's initial purchase.

"The fraud must be brought home to the person whose title is impeached, and Claude's fraud was not brought home to Felicity," a judgement summary from the High Court stated.

The court found that because Felicity was not a bona fide purchaser of Claude's interest in the land, Gerard Cassegrain Co Pty Ltd could recover his half of the property. Denis Cassegrain, Catherine Dunn, Patrick Cassegrain and John Cassegrain have since tried to bankrupt Felicity Cassegrain.

They say that on 5 December last year, they were awarded $1,399, 870.71 against Felicity Cassegrain in the Supreme Court proceedings they started in 2008.

The siblings say she hasn't paid that amount.

The debt, including interest accrued since December, is now $1,440,293.47 and increasing at the rate of $325.99 a day.

But in September, Felicity Cassegrain lodged an appeal against the December decision in the NSW Court of Appeal.

She then argued in the Federal Court that the attempt to bankrupt her should be adjourned until after the Court of Appeal has decided her appeal.

Last week the Federal Court judge accepted her argument and the bankruptcy proceedings have been adjourned until after the Court of Appeal makes its decision.