The death has taken place of 35-year-old cervical cancer campaigner and HPV vaccination advocate Eileen Rushe.
From Termonfeckin in Louth, she was diagnosed with cervical cancer in December 2018.
In March this year, she received an apology and settlement from the HSE, for failings in her care at Louth County Hospital.
After her settlement, Ms Rushe urged people to avail of any screening services available to them and said "screening programmes and vaccines save lives".
The Irish Cancer Society said today that Ms Rushe had been an incredible advocate for women living with cervical cancer and for future generations to protect themselves through vaccination.
Ms Rushe's brother has said he'd like her to be remembered "for her strength and her giving nature".
Darragh Rushe told RTÉ's Drivetime that her diagnosis had been devastating for her and for all the family.
He said she looked at the bright side and tried to get the best of everything in the time she had left.
Mr Rushe said at the end, his sister was brilliant, she was still making plans and was "happy and stubborn".
He said she felt very strongly that people should get the HPV vaccine, to protect themselves, as it wasn't available to her when she was young and she didn't want any other family to go through what her family has gone through, "when the vaccine is there and works".
