Complex sentence: These had been a very fashionable place of entertainment during the latter part of the 18th century, but they had closed by the middle of the 19th, presumably the name still had an aura about it when this suburb was named in the 1880s.
Split into simpler sentences: These had been a very fashionable place of entertainment during the latter part of the 18th century, but they had closed by the middle of the 19th century. Presumably the name still had an aura about it when this suburb was named in the 1880s.