[citation needed] The particular use of the term "convict" in the English-speaking world was to describe the huge numbers of criminals, both male and female, who clogged British gaols in the 18th and early 19th century.
Their crimes would today be regarded as petty misdemeanors (stealing small items or food), or are no longer in the criminal code (such as being in unresolved debt).
Many were used on public works, but a significant number were "assigned" to private individuals as domestic servants, rural workers, etc.
However, during the transportation era and for many years after, previous convicts and their descendants tended to hide their former criminal background, sometimes resulting in distorted or completely missing family history.
Extensive and comprehensive records kept on every individual are now able to fill in the gaps; and, in fact, many family historians can find out more about their convict ancestors than they can about those who arrived in Australia as free settlers.