Philomena Lee has met with Pope Francis in the Vatican as part of her campaign to have Ireland's stringent adoption laws re-examined.
Ms Lee travelled to Rome at the invitation of the Vatican to attend Mass and was joined by actor Steve Coogan and her daughter Jane Libberton.
The visit is the latest on a remarkable journey that Ms Lee has undertaken since the story of her search was depicted in the movie 'Philomena', which has four Oscar nominations.
She hopes the Pope will support the Philomena Project, which aims to make it easier to reunite adopted children with their biological parents.
"I am honoured and delighted to have been in the presence of Pope Francis today," she said.
"I have always put great faith in the church to put the wrongs of the past right.
"I hope and believe that his Holiness Pope Francis joins me in the fight to help the thousands of mothers and children who need closure on their own stories."
A press conference discussing aims of The Philomena Project will take place in Rome today.
Ms Lee, Ms Libberton and founder of Adoption Rights Alliance Susan Lohan will all be in attendance.