Information on Margaret Bradburne

I have discovered that my husband's great grandmother MARGARET BRADBURNE or maybe spelt without the e on the end, was transported to Van Deiman's Land in 1853 with a sentance of 7 years for stealing clothes, coat, petticoat and shawl. She was said to be about 20 years old at the time and her sentance was handed down in Cavan. She arrived on the Midloithian [departed from Dublin] on 24 February 1853 and is listed as Protestant, unmarried, unable to read or write and a house maid. She married John Henry Boulter on license in New Norfolk, Tasmania on 29 April 1856 so she must have had her sentance varied in some way. I am trying to track her family in Ireland - her father's name is said to have been Richard Bradburne and her mother Mary but no further detail has been found as yet. One of her children Edith Lily Boulter married James Arthur Clark [he came from London but have notfound all his details as yet] in 1896 and Gary's father Alfred Roy Clark was their youngest child and he was born in New Norfolk in 1903. He died some months after his 100th birthday in 2004. Any information on the Bradburne family would be greatly appreciated. With thanks Gillian Clark