He was born in the parish of Glanmire in 1830. As he grew up he was involved in a serious accident- a heavy fall- which resulted in curvature of the spine, and general ill health. He attended the School of Art for several years and became quite talented with brush and pencil.
His family moved to another house near the corner of Old Youghal Road and Ballyhooly Road, and it was from that house that Dillon was taken prisoner on the 15th September, 1865, when handcuffed he was dragged to the police barracks. He was later taken to the Women’s Gaol and imprisoned there. The police, on searching his home in Dillon’s Cross found a pair of field glasses, some drawings, and some incriminating letters sewn into the mattress of his bed. On the 18th December, Dillon and another Fenian, Lynch, were tried together in the dock in Cork Courthouse by Judge Keogh, and he brought in a verdict of guilty and sentenced Brian Dillon to penal servitude. He was brought under armed guard by train from Cork to Dublin and then thrown into Mountjoy Gaol. He spent nearly a month there and suffered a lot from lack of sleep. In January 1866 Dillon and John Casey (the Galtee Boy) were handcuffed together on the tough and rough sea crossing between Kingstown and Holyhead. On arrival at Holyhead they were then taken by train to Pentonville Prison. This was a very cold prison and Dillon became seriously ill in May 1866. He was transferred to the hospital wing of Woking Convict Prison and this was to be his home for the next four and a half years. Here he became Convict Number 2658. In 1870 a commission was set up to investigate the Fenian prisoners, and on account of his bad health, this commission recommended that Dillon be allowed home to Cork. In January 1871 he was transferred to Millbank Prison London, and two weeks later on the 8th February he was set free. The following day he arrived in Dublin and after a few days rest, he returned to Cork by train. All along the route thousands of people waited on the platforms to greet him, and read special addresses of welcome. The train reached Cork at 8.00 p.m and even though a carriage and pair were waiting, he was glad to seek refuge in the first covered car he could find, so dense was the crowd all around him, willing to shake his hand. The triumphal procession from the station to his home in Dillon’s Cross then began, and the hills all along the route were lighted with tar barrels. Then amid emotional scenes Brian Dillon met his family, and afterwards appeared at one of the windows of the house and thanked the people of Ireland for the great reception he had received everywhere on his journey home to Cork. Brian was now in very poor health and his mother began the task of nursing him.
Everything that loving care and money could do was done, and from New York came a cheque for £50 from the generous-hearted O Donovan Rossa. Other friends too contributed, but all to no avail.
On Saturday August 17th, 1872, he died at his home in Dillon’s Cross, surrounded by his sorrowing relatives. His funeral was one of the biggest ever seen in Cork. The cortege was headed by the Barrack Street Band, and at least ten other bands took part. All had their instruments dressed in sombre black. On Monday August 18th, his remains were privately borne to St. Joseph’s cemetery, to a temporary resting place, as it was decided to build a vault in the family burial ground in Rathcooney, and this would not be ready for a few days. Later the funeral route travelled from Turners Cross along Anglesea Street, South Mall, Grand Parade, Patrick Street, McCurtain Street and St. Luke’s. On arrival at Dillon’s Cross, the funeral procession halted outside the house of the deceased, and prayers were recited for the repose of the hero’s soul. Then the procession moved on towards Ballyvolane, and up the steep hill, towards the graveyard at Rathcooney. O arrival at the newly built tomb, so dense was the crowd that milled around the hearse, that considerable difficulty was experienced in getting the coffin to the grave. Then the priests read the burial service, and in a hushed silence, Canon Freeman asked the entire assembly to kneel and recite the Lord’s Prayer aloud. He blessed the grave and the mortal remains of Brian Dillon were lowered to rest. The coffin was then covered, and after Colonel Richard O Sullivan Burke’s oration, the crowd quietly dispersed. The drama of Brian Dillon was over. Some years later a fine Celtic cross was erected over his grave. It is inscribed: To the memory of Brian Dillon, whose life was devoted and sacrificed to his country’s cause. His fellow citizens remembering his worth have erected this Celtic cross. Born 1830, Died 1872. A Dhia Saor Eire. God Save Ireland.