A lone pine descended from a tree at the bloody battlefield of Gallipoli; an Australian family's loss; and a now a double royal connection.
Following the national Anzac Day ceremony at the Australian War Memorial in Canberra on Friday, the Duke and Duchess of Cambridge planted an Aleppo Pine sapling derived from seeds gathered after the battle of Lone Pine.
After laying floral wreaths at Tomb of the Unknown Australian Soldier, war memorial director Brendan Nelson and Rear Admiral Ken Doolan and their wives Gillian Adamson and Elaine Doolan accompanied the couple to the tree planting site.
Kate wore a grey tweed coat dress, midnight blue head piece, and a poppy broach that Emma, the wife of Australian Victorian Cross recipient Ben Roberts-Smith, gave her at a reception in Canberra last night.
For Prince William, who served in Britain's Royal Air Force for more than seven years, the tree had a special family connection.
Prince Henry, the Duke of Gloucester - who later went on to serve as Australia's governor-general after the Second World War - planted the original lone pine at the war memorial in October 1934.
That tree which is coming to the end of its natural life, was propagated from a pine cone from Gallipoli which Australian Lance Corporal Benjamin Smith, sent home to his mother Jane McMullin.
It commemorated his brother Mark who died on August 6, 1915 in the battle of Lone Pine, one of the bloodiest in the campaign with more than 2000 Australian casualties in four days.
Turkish troops had cut down pine trees for their trenches and only a solitary one remained when the battle began.
Mrs McMullin raised two seedlings - the other was planted at Inverell in NSW's north, where her sons enlisted.
For decades the Yarralumla Nursery has been collecting and propagating seeds and distributing saplings.
The duke was given a photograph of Prince Henry's tree planting framed in wood from the war memorial's lone pine and commemorative wooden boxes as well.
Former Liberal MP Sophie Mirabella and her young daughters were among the crowd lining the path to see the couple.
They had a sign which read "Wangaratta honours their service". Her daughter Kitty, 3 and a half yelled out to Kate that she was very beautiful.
The royal couple made a surprise appearance at the dawn service earlier.
They head home with baby George in afternoon bringing an end to their Australian tour.