Hi Michael, I have William Heffernan born 1817 baptised in the parish of Tipperary, son of Daniel & Mary Heffernan nee Prendergast. William was transported to NSW in 1849 for perjury. At the same time were John Heffernan Snr and his son John transported for cattle stealing. They arrived on the same ship the 'Havering'. John Heffernan Snr. has a Ryan marrying into his family. These Heffernan's came from Knockavilla area. Regards Maggie Heffernan