A number of my relatives are dark swarthy people, who have all emigrated to Australia directly from England or Scotland.
One of the explanations I have received from an elderly relative for their dark features is that Spanish conquistadors came through Scotland and cross-bred with the locals. Another explanation recently provided to me by my grandmother is that survivors of the Spanish Armada swam to shore and came to live in England.
Does anyone know if there is any truth to any of this?