John G Hann - John G. Hann's Background

Is John G Hann the son of Joseph Hann & Jane nee Martin, and who was transported to NSW arriving in mid March 1824, as per the following references? :

Name: John Hann
Gender: Male
Christening Date: 27 Jul 1800
Christening Place: West Stower, Dorset, England
Father's Name: Joseph Hann
Mother's Name: Jane
"England Births and Christenings, 1538-1975," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/NDLN-SQT : accessed 20 Jun 2014), John Hann, 27 Jul 1800; citing West Stower, Dorset, England, reference item 14; FHL microfilm 1239247.

http://www.opcdorset.org/StourFiles/WestStour/WestStourBaps.htm
West Stour
BAPTISMS 1732 - 1879
Transcribed from the Bishop's Transcripts by Cassandra Gotham
John child of Joseph & Jane HANN baptised 27-Jul 1800 **** see note below

**** John Hann arrived at Port Jackson, Australia 5 March 1824 per "Guildford" as a convict. His occupation is given as labourer, boat builder, carpenter, sawyer, carrier. He died 2 March 1857, at South Grafton New South Wales.