I need help in locating the origins for Thomas UPTON and his English wife and child.:

In 1787 at the age of 23 years Thomas Upton was living in lodging at 49 Windmill Street London with his wife who was big with child and though poor was industrious. In July 1787 he was arrested with three others and charged with receiving stolen goods. In September they appeared at the Old Bailey Court. At the trial, 14 year old John COOPER had stolen 49 calico shirts from his employer Mr. John Williamson valued at £12.5.0 and 3 pair thread stockings 8/-. Cooper was found guilty and sentenced to be whipped privately and returned to his employer. (Following character reference from his employer). Thomas received some shirts and his wife cut them up to make table linen and a frock for the new baby. Thomas was found guilty of receiving stolen goods and on 12-8-1787 was sentenced to transportation to NSW for 14 years. The other 3 got off on a technicality. Thomas was interred in one of the Thames hulks for 2 years and 4 months before leaving Portsmouth in the " Neptune"-309 tons and in the "second fleet” on 19th Jan 1790. He survived the "Death Fleet" and arrived Sydney Cove 28-6-1790. Thomas was a carpenter and was made to assist settlers with building projects especially around Windsor. By 1800 he was given approval from Governor Hunter to become self employed as a carpenter and in 1801 his sentence had expired. Around this time he met Sarah HOSKISSON nee PIGG. After her husband was murdered by aborigines and she was pardoned they cohabited and eventually were married and given 25 acres of land at McHillar on the Hawkesbury River and took up farming.
They are buried at St. Matthews Windsor NSW Australia.