Where did Australia's first sheep come from?

Some sheep, as with other cattle and food, utility or sports animals came to Australia with the early fleets: however, the original sheep imports were of low quality and used mainly for meat; the early settlers didn't quite trust, at the start, the notion of eating what were apparently enormous leaping rats. Later, they came to terms with kangaroo tail soup.
The Australian wool and meat industry truly began when Sir Joseph Banks managed to buy merinos from Spain and Portugal in the eighteenth century.
Merinos were later crossed with other European sheep for their wool and meat qualities and imported into Australia, which profited greatly from these new breeds, with their fine wool and superior meat.