|Home and Away character|
|Portrayed by||Judy Nunn (1988–2000, 2002–03)
Nancye Hayes (2000)
|First appearance||17 January 1988|
|Last appearance||13 February 2003|
|Introduced by||Alan Bateman (1988)
Julie McGuaran (2002)
|Occupation||Hogan's General Store owner (1987-88)
Co-owner of Bayside diner (1988-2000)
Co-owner of the Beachside Diner (2000)
Ailsa Stewart (née O'Rourke; previously Hogan) is a fictional character from the Australian soap opera Home and Away. She was married to Alf Stewart and had a son Duncan. She was played by actress Judy Nunn for 13 and a half years. When Nunn left the show she was one of only four original cast members . The role of Ailsa was briefly played by theatre star Nancye Hayes whilst Nunn was taking leave due to illness in 2000.
Ailsa owns the local general store and befriends the Fletcher family when they arrive in Summer Bay. She sees the good in Bobby Simpson (Nicolle Dickson). Alf Stewart (Ray Meagher) takes an interest in Ailsa and they soon become engaged. Alf's daughter Roo (Justine Clarke) takes a dislike to Ailsa and feels she is trying to replace her late mother, Martha (Alison Mulvaney) and has her aunt Morag Bellingham (Cornelia Frances), a lawyer, do a background check on Ailsa. Roo learns that Ailsa served time for murdering her abusive father but most of the bay side with Ailsa. Ailsa and Alf marry in a low-key ceremony and they later foster Bobby together. Alf is upset when he thinks that the only reason she married him was to give Bobby a home. After selling her store to Alf's sister Celia (Fiona Spence), she goes into partnership with Bobby in the Bayside Diner. Ailsa later discovers she is pregnant and gives birth to a son, Duncan (Alanna Ellis) in 1989. She suffers from post-natal depression shortly after Duncan's birth and attempts to smother him at one point. However, when Duncan is hospitalized due to an alllergic reaction to an old christening gown, Ailsa finally bonds with the child.
Ailsa's niece Emma Jackson (Dannii Minogue) arrives in Summer Bay after attacking her stepfather for trying to sexually molest her. Ailsa and Alf clash over Emma staying and her constant mood swings. Emma's mother, Bridget (Paula Duncan) tries to get her to return home with her and Ailsa battles her but loses. However, Emma returns a fortnight later after realising her mother has not changed at all. Just before Emma leaves, Ailsa takes in her former cellmate Margot Dean's two teenage children; Blake (Les Hill) and Karen (Belinda Jarret) much to Alf's chagrin. However, Alf begins to form a bond with them. They also begin fostering Simon Fitzgerald (Richard Norton), Sarah Thompson (Laura Vasquez) and Curtis Reed (Shane Ammann) in the years that follow. Ailsa is devastated when Bobby dies.
Following a hold-up at the diner, Ailsa suffers a bout of depression and begins suffering hallucinations; in which she sees Bobby's ghost coming out of the fridge door. These visions are a result of expired anti-depressants from her post-natal period. Ailsa is later confronted by her brother, Tony O'Rourke (Daniel Roberts), who still harbours a grudge against her for killing their father. They eventually make their peace. Ailsa is later involved in a car accident with Duncan and ends up comatose as a result. The doctors consider switching off the machine but Duncan witnesses movements. Ailsa wakes up, but due the brain damage she has suffered, her personality becomes cold and distant and she is resentful toward Alf for thinking of turning the machine off. Irene Roberts (Lynne McGranger) helps Ailsa get back to her old self.
Shauna Bradley (Kylie Watson) arrives in Summer Bay and learns that Ailsa is her biological mother. It is revealed that Ailsa was raped by a prison guard while incarcerated for her father's murder, resulting in Shauna's conception and her being subsequently adopted by the Bradley family. After a shaky start, Ailsa and Shauna soon bonded and developed a close mother-daughter relationship. When the diner burns down due to carelessness from Colleen Smart (Lyn Collingwood), Ailsa is saddened as it is her last link to Bobby. She and Alf then purchase a building for a new restaurant called The Beachside Diner. While moving boxes one day, Ailsa suffers a massive heart attack. Alf and Duncan try to help her but she dies, Ailsa is later cremated and her ashes are scattered by Alf into the ocean. Alf blames himself and Duncan becomes withdrawn. Ailsa reappears as a vision to Alf while he is suffering from a brain tumour. Morag and Donald Fisher are concerned and try to confront Alf about it but due to visions of Ailsa egging him on, Alf injures them both on separate occasions. Following Alf's diagnosis, he refuses to have the tumour removed as he does not want to stop seeing visions of Ailsa. After he collapses on the beach, Ailsa shows Alf what Summer Bay would be like if he dies. Alf eventually has the tumour removed and the visions stop.
The character has been described as a "much-loved maternal disciplinarian". The episode dealing with the aftermath of Ailsa's breakdown following a robbery at the diner won the Australian Film Institute Award for "Best Television Episode" in 1995 and was given to Executive Producer John Holmes and Series Producer Russell Webb.