The actor Angharad Rees, who has died of pancreatic cancer aged 63, soared to fame in Poldark (1975-77), the BBC's dramatisation of Winston Graham's novels set in 18th-century Cornwall. Rees played the fiery servant Demelza, whose beautiful smile, wide-open eyes, flowing red locks and headstrong nature won over the brooding hero.
Robin Ellis starred as Ross Poldark, the British army officer returning home from the American war of independence to find his father dead, the family estate run down and their tin mines about to be sold. He seeks to reignite the flames with his fiancee, the aristocratic Elizabeth (Jill Townsend), but discovers she is set to marry his cousin. Poldark finds a soulmate in the miner's daughter Demelza after stopping a stallholder at Redruth fair from thrashing her for stealing. He offers her a job as his kitchen maid, and later marries her.
The costume drama, which ran for two series and attracted up to 15 million viewers in Britain and many more around the world, was particularly popular with women, who swooned over Ellis and admired the feistiness of Rees's character. The wild Cornish locations were also impressive at a time when the majority of costume dramas were almost entirely studio-bound.
Rees was born in London, the daughter of a distinguished Welsh psychiatrist, Linford Rees, and his wife, Catherine. When Angharad was a baby, her parents moved the family back to their homeland, to live in Cardiff.
In the mid-1960s she gained experience as an assistant stage manager and actor at the West Cliff theatre, in Clacton-on-Sea, Essex. She made her screen debut in 1968, as the parlourmaid in a BBC television adaptation of George Bernard Shaw's Man and Superman, and had one-off parts in TV dramas and comedies including The Avengers (1968) and Doctor in the House (1969).
Rees played Jack the Ripper's murderous daughter in the Hammer horror film Hands of the Ripper (1971) and appeared as Gossamer Beynon, alongside Richard Burton, Elizabeth Taylor and Peter O'Toole, in Under Milk Wood (1972). Although she had few further film parts, Rees seemed ever-present on television throughout the 1970s. Some of her best roles included Sarah Churchill, the daughter of the wartime prime minister Winston Churchill (played by Burton) in The Gathering Storm (1974), and Celia in a 1978 production of As You Like It, opposite Helen Mirren. She also guest-starred in The Morecambe and Wise Christmas Show (1977), an accolade in itself.
As Lady Evelyn Herbert, she teamed up with Ellis again in the television film The Curse of King Tut's Tomb (1980). Later, she starred as the remarried former wife of Paul Nicholas's vet in the sitcom Close to Home (1989-90) and joined the second series of Trainer (1992) as Caroline Farrell, coping with her drinking and gambling husband Freddie (Jeremy Sinden).
She appeared in the West End in It's a Two Feet Six Inches Above the Ground World (Wyndham's theatre, 1970) and The Millionairess (Theatre Royal, Haymarket, 1978-79). In 1973, she married the actor Christopher Cazenove, with whom she had two sons. The couple divorced in 1994. Their eldest child, Linford, died in a car accident in 1999.
Rees subsequently gave up acting in order to concentrate on developing her own jewellery design business, including a shop in Knightsbridge. She described this new career as therapeutic, and some of her creations were featured in the film Elizabeth: The Golden Age (2007).
Rees had a relationship with the actor Alan Bates, who had suffered the loss of his own son years earlier. However, she turned down his proposals of marriage and the couple eventually parted in 2002. "We were very close, but it was difficult because I had not yet given way to my grief over the loss of my son," she said in an interview in 2007.
Continuing to support the arts, Rees was made an honorary fellow of the Royal Welsh College of Music and Drama and was appointed CBE in 2004. The following year, she married David McAlpine. He survives her along with her younger son, Rhys.