Port Adelaide has informed AFL fans and media that Junior Rioli will revert back to his birth name, Willie, following the anniversary of his father's death last year after switching in accordance to Tiwi custom.

The livewire forward, who was last called Willie Jnr in his final season at West Coast in 2022, has returned to Adelaide from the Top End following the club granting Rioli leave for a week to attend a family memorial service.

Rioli Jnr was obliged to fulfill all elements of the customary ceremony that included an official name change.

Aboriginal communities that had a relationship with the family's patriarch joined the Riolis last Friday dancing to bring back his good memories while also shedding tears for the last time in a show of respect.

The widow of Rioli Snr after mourning all of the past year has stopped wearing black and can grow out her hair out after ritually not being allowed to shower.

Rioli had adopted the name Junior during mourning to honour the brother of the late Maurice Rioli, the Richmond and South Fremantle legend, after Willie Snr, who aged 50, suddenly passed away last year.

Sons of fathers of the same first name adopt the junior moniker, as representative of the cultural traditions of the Tiwi Islands.

The club released a media statement following the cessation of the 12-month grieving period for the Power offseason recruit advising the public of the name change.

While Willie Snr played football in the national shadows of his older sibling, Maurice, whose son also named Maurice currently plays for Richmond, his career at St Mary's and South Fremantle remains decorated and led Hawthorn drafting Rioli Snr in 1990.

Port Adelaide insist that Rioli Jnr is available for selection against Collingwood in the top-two battle on Saturday night.

This comes after missing the Power's recent match against Essendon over unspecified "personal reasons".

The club added that the Rioli family have appreciated the greater football community for its respect towards accepting their cultural protocols for the past 12 months.

"My father's ceremony a year on from his burial is so important to our culture," Rioli Jnr told portadelaidefc.com.au earlier this month.

"I get my name back…my mum can stop carrying the pain of a widow.

"Every culture is different. Up there, we have a year of grieving.

"This is the last week of that year of paying respect to my father and our culture."