[2] Swymmer may have inherited a share in a sugar plantation in Barbados from his father.
The deal was illegal, as the Royal African Company had a monopoly on the British slave trade at this point.
[2][3] In 1681, Swymmer built two warehouses in Bristol, probably for the storage of sugar, and in 1692 Swymmer loaned the Society of Merchant Venturers £600 for building a new quay and cranes in Bristol docks.
Historian Madge Dresser reports this as the only case she has found of a Bristol woman involved in her husband's slave-factoring or slave trading business.
[2] Swymmer's daughter Elizabeth married Thomas Fane, 8th Earl of Westmorland.