could it be jimmy hannon

It sure is Greg.  Off you go.

Jimmy Hannan (25 August 1934 7 January 2019) was an Australian radio and television personality, variety show host, singer, entertainer and game show host of the 1960s and 1970s. One of the pioneers of television, he appeared regularly on variety show In Melbourne Tonight, and later hosted his own musical variety show Jimmy, later called Tonight with Jimmy Hannan.

famous Australian

Cant seem to get it

Is he a Yachtsman ?   

Sir James Hardy ?

Sir James Hardy OBE (b. 1932) is a wine industry executive, yachtsman and community leader. One of Australia's leading sailing identities, he was a member of the Australian Olympic team in 1964 and 1968, has skippered a number of America's Cup entries and was team adviser to Australia II, the Cup winner in 1983. He joined the family company Thomas Hardy and Sons Pty Ltd as a shipping clerk in 1953, rising over subsequent years to hold the position of Non-Executive Director of the giant BRL Hardy Wine Company from 1992 to 2003. A long-time advocate for the protection of coast and marine environments, he is a Patron of the Australian National Maritime Foundation and has been Director of the HM Endeavour Foundation Pty Ltd since 1996.

Thanks Greg.  Try this one.

That's her. Over to you.

Marie Dolores Eliza Rosanna Gilbert, Countess of Landsfeld, better known by the stage name Lola Montez, was an Irish dancer and actress who became famous as a Spanish dancer, courtesan, and mistress of King Ludwig I of Bavaria, who made her Gräfin von Landsfeld. At the start of the Revolutions of 1848 in the German states, she was forced to flee.

Sorry Sheba Ive been at work,over to you.

Who is fhis

John Bertrand ?

Yep , all yours Sheba. Just noticed my wife has the same Birthday as you albeit a different year. Cheers

Then you are a lucky man Greg, as long as you continue to treat her well.  .

John Bertrand AO skippered the winged keel Australia 2 to victory over Dennis Connors Liberty to win the 1983 America's Cup, breaking 132 years of American domination and in the process, breaking the longest-running record in the history of modern sport.

Try this one.  Should be easy.

She was one of Frank Sinatras' wives.

Isn't anyone playing anymore ?  This lady was so well-known, I can't believe nobody recognises her.  First name starts with "A". 

Too easy: Ava Gardner.

You got her BG.  Will try and make them a bit harder in future.  

Ava Lavinia Gardner (December 24, 1922 January 25, 1990) was an American actress and singer. Gardner was signed to a contract with Metro-Goldwyn-Mayer in 1941, and appeared mainly in small roles until she drew attention with her performance in The Killers (1946). She was nominated for the Oscar for Best Actress for her work in Mogambo (1953), and also received BAFTA Award and Golden Globe Award nominations for other films.

Gardner appeared in several high-profile films from the 1940s to 1970s, including The Hucksters (1947), Show Boat (1951), Pandora and the Flying Dutchman (1951), The Snows of Kilimanjaro (1952), The Barefoot Contessa (1954), Bhowani Junction (1956), On the Beach (1959), 55 Days at Peking (1963), Seven Days in May (1964), The Night of the Iguana (1964), The Bible: In the Beginning... (1966), Mayerling (1968), Tam-Lin (1970), The Life and Times of Judge Roy Bean (1972), Earthquake (1974), and The Cassandra Crossing (1976). Gardner continued to act regularly until 1986, four years before her death in London in 1990, at the age of 67.

She is listed 25th among the American Film Institute's 25 Greatest Female Stars of Classic Hollywood Cinema.^[

Thank you Sheba.  Here's one for you:     

Rebecca Gibney ?

Yes, it is Liz Hayes. Your go Jack:

Thanks BG. OK all Who is this?

Cheers.

Aaron Pederson.

G'day Sheba. That's him. Who do you have for us?

Cheers.

Thanks Jack.  Try this one.

She used to be Royal.

I wish some-one would tell me if I'm making them too easy.  I can't believe this one hasn't been identified already.

Hi all is it princess Grace of Monaco