This might be of some interest if you havent already seen it..
BLADES, Esther. Per "Broxbornebury", 1814
1817 Jul 7,8 Re permission to marry at Sydney (Reel 6005; 4/3496 pp.232-3)
BLADES, Sarah (Came free per "Broxbornebury", 1814) see also SMITH, Sarah
BLADES, Sarah. Came free per "Broxbornebury", 1814; widow of Thomas Blades
1818 May 4,5 Re permission to marry George Smith at Sydney (Reel 6006; 4/3498 p.202)
BLADES, Thomas. Per "Surrey", 1814
1815 Jan 23 Referred to in evidence at inquest on Elizabeth Howell held at Sydney (Reel 6021; 4/1819 p.323)
1819 Nov 20 Lost shortly after the arrival of his wife Sarah and three children per "Broxbornebury" in a gale of wind in Cockle Bay; his wife subsequently married George Smith for whom she was petitioning for mitigation of sentence (Fiche 3200; 4/1860 p.35)
http://colsec.records.nsw.gov.au/indexes/colsec/b/F05c_bl-bo-02.htm#P844_31002