Thomas Fitzpatrick

My ancestor, Thomas Fitzpatrick came to NSW Australia prior to his marriage here in 1862. He came from Queens County which is stated on all records found here. He died here in 1891. His age as stated on his on his children's birth certificates, of which he was the informant, gives his birth year as being 1821 and 1824. His death certificate show him as being born in 1821. The children were James, Mary, Annie and William. His father is down as William Fitztatrick and mother's name ' not known'. His wife was Julia Buckley. 

Thomas came to Australia possibly in the 1850's. He ran away from Ireland to come here and his father sent his sister out to find him but he refused to return home so she left without him. When he left Ireland he had been studying for the Priesthood at Maynooth Seminary, had a serious argument with his piers and left before being ordained. All I know is that he came from Queens- Laois County. I have found a shipping register of the arrival of a Thos Fitzpatrick on the 'William Jardine' in 1841 age 23. His native place was Knocksha, Queens Co. the writing is not terribly clear so this may not be the correct spelling. 

Hoping someone can advise.

Rosemary