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Gai Waterhouse: Biography, Horses, Net Worth, and Family

Oliver Lachlan Thompson Smith • 2026-07-28 • Reviewed by Oliver Bennett

Gabriel Marie Waterhouse, known universally as Gai Waterhouse, transformed her father Tommy Smith’s Tulloch Lodge into a modern racing powerhouse. Her career spans over three decades of Group 1 victories and a historic Melbourne Cup win.

Full Name: Gabriel Marie Waterhouse (née Smith) | Born: 2 September 1954 | Occupation: Horse trainer, businesswoman | Group 1 Wins: Over 150 | Sydney Trainers’ Premierships: 7

Personal Details

Career Highlights

Stable Information

Awards & Records

  • Officer of the Order of Australia (AO): 2018
  • Golden Slippers: 7 Racing Australia
  • First female Australian trainer to win Melbourne Cup: 2013 Racing Australia

What is Gai Waterhouse’s real name?

Gabriel Marie Waterhouse (née Smith)

Her full legal name is Gabriel Marie Waterhouse, born Gabriel Marie Smith on 2 September 1954, according to the National Portrait Gallery of Australia. She is universally known as Gai, a shortened form of Gabriel that became her public identity from her early days in racing.

Why she is known as Gai

The nickname “Gai” derived naturally from her given name Gabriel. She has used it professionally throughout her career, and it is the name under which she holds her trainer’s licence and operates Tulloch Lodge.

Why is Gai Waterhouse famous?

Record as a racehorse trainer

Waterhouse is famous for her extraordinary success as a thoroughbred racehorse trainer. She has trained over 150 Group 1 winners, with the official Gai Waterhouse & Adrian Bott Racing site stating a tally of 160. Racing Australia reported 154 Group 1 wins as of her Hall of Fame induction in September 2023 (Racing Australia). The National Portrait Gallery notes that her stable had won over 102 Group 1 races by 2002-2003.

Waterhouse’s record of over 150 Group 1 wins places her among the most successful trainers in Australian racing history, a tally that continues to grow.

First female trainer to win Melbourne Cup?

Racing Australia confirms she became the first Australian female trainer and the second female trainer overall to officially win the Melbourne Cup when Fiorente won in 2013 (Racing Australia). This victory brought her international recognition.

How many children does Gai Waterhouse have?

Names of her children

Gai Waterhouse has two children: a daughter, Kate Waterhouse, and a son, Tom Waterhouse.

Daughter Kate Waterhouse

Kate Waterhouse is a media personality, journalist, and businesswoman in her own right.

Her son Tom Waterhouse is a prominent bookmaker and businessman, continuing the family’s deep ties to the racing industry.

What famous horses did Gai Waterhouse train?

Champion racehorses under her care

Waterhouse trained numerous champion racehorses including Fiorente, More Joyous, and Pierro. Fiorente won the 2013 Melbourne Cup under her guidance. More Joyous was a multiple Group 1 winner, and Pierro was an undefeated two-year-old who won the Golden Slipper. Other notable Group 1 winners include Alinghi, Nothin’ Leica Dane, and Hot Danish.

Notable Group 1 winners

  • Fiorente (Melbourne Cup 2013)
  • More Joyous (multiple Group 1 wins)
  • Pierro (Golden Slipper, 2012)
  • Alinghi (Golden Slipper, 2004)
  • Hot Danish (multiple Group 1 sprints)

Who is Gai Waterhouse’s husband?

Rob Waterhouse

Gai Waterhouse has been married to Rob Waterhouse since 1979. Rob Waterhouse is a well-known bookmaker in Australian racing.

Marriage date and length

The couple married in 1979 and have been together for over four decades. They maintain a high profile in the Sydney racing scene.

How much is Gai Waterhouse worth?

Estimated net worth

Gai Waterhouse’s net worth is estimated in the tens of millions of Australian dollars. Exact figures are not publicly disclosed, but her stable operations, training fees, and media engagements are the primary sources of her income.

Sources of income

Her income streams include training fees from owners, prize money from race wins, stabling at Tulloch Lodge, media appearances and commentary, and her partnership with Adrian Bott in the Waterhouse/Bott stable partnership, which has trained 26 Group 1 winners collectively, according to the official site.

Precise net worth figures are estimates only; no verified financial disclosure has been made by Waterhouse or her representatives.

Who is Gai Waterhouse’s daughter married to?

Kate Waterhouse’s husband

Gai Waterhouse’s daughter, Kate Waterhouse, is married to Luke Ricketson, a former professional rugby league player who played for the Sydney Roosters in the NRL.

Family background

Luke Ricketson is a respected figure in Australian rugby league, having captained the Roosters and represented New South Wales in State of Origin.

Gai Waterhouse Career Timeline

  • 1954: Born Gabriel Marie Smith in New Zealand.
  • 1979: Marries Rob Waterhouse.
  • 1992: Granted her trainer’s licence (Gai Waterhouse official site).
  • 1990s: Takes over training from father T.J. Smith at Tulloch Lodge. The National Portrait Gallery places this handover in 1994-1995, while the official site says 1992. The Racing Post states she took over after her father became ill in 1994.
  • 2013: Trains Fiorente to win the Melbourne Cup.
  • 2018: Awarded Officer of the Order of Australia (AO).

Confirmed Facts and Uncertain Claims

Confirmed facts

  • Full name: Gabriel Marie Waterhouse (National Portrait Gallery)
  • Birth date: 2 September 1954
  • Married to Rob Waterhouse since 1979
  • Over 150 Group 1 wins confirmed by Racing Australia (154 as of 2023) and official site (160)
  • 7 Sydney Trainers’ Premierships (Racing Australia)

Uncertain claims

  • Exact net worth figure: estimated but not confirmed.
  • Current training fees structure: not publicly detailed.
  • The precise year of the Tulloch Lodge handover varies by source (1992 vs 1994-1995).
  • Group 1 win counts vary from 145 (Wikipedia summary) to 154 (Racing Australia, 2023) to 160 (official site, current).

“She is part of a rare dynasty in Australian racing,” according to the Racing Australia Hall of Fame media release (Racing Australia).

Gai Waterhouse’s official site describes her training philosophy as centered on “pedigree knowledge blended with modern stable management.” (Gai Waterhouse & Adrian Bott Racing)

Readers interested in her early life and training career can explore Gai Waterhouses biography and career for a comprehensive overview.

Frequently Asked Questions

How many Group 1 races has Gai Waterhouse won?

Official sources vary: the Gai Waterhouse official site states 160 Group 1 winners, while Racing Australia reported 154 at her Hall of Fame induction in September 2023. A Wikipedia summary lists 145.

What is the name of Gai Waterhouse’s training stable?

Her training stable is called Tulloch Lodge, located on Bowral Street in Kensington, Sydney, about seven kilometers from the CBD.

Does Gai Waterhouse have a partnership with another trainer?

Yes, she is in partnership with Adrian Bott. Together they are known as the Waterhouse/Bott stable, having trained 26 Group 1 winners collectively.

How can I contact Gai Waterhouse’s stable?

Contact details are available through the official Gai Waterhouse & Adrian Bott Racing website at gaiwaterhouse.com.au.

What is Gai Waterhouse’s social media handle?

She is active on Instagram under the handle @gaiwaterhouse.

Has Gai Waterhouse won the Melbourne Cup?

Yes, she trained Fiorente to win the 2013 Melbourne Cup. She is the first Australian female trainer to officially win the race.

What awards has Gai Waterhouse received?

She was appointed an Officer of the Order of Australia (AO) in 2018 and was inducted into the Australian Racing Hall of Fame as a Legend in 2023.



Oliver Lachlan Thompson Smith

About the author

Oliver Lachlan Thompson Smith

We publish daily fact-based reporting with continuous editorial review.