Olivia and Sophia, a brand new historical novel by Rosie Milne, follows the talented and highly driven Sir Stamford Raffles as he sets sail from Georgian London to make his name in Penang where he was assistant secretary to the governor-general. It tells the story of his two wives and the tremendous influence they had upon his life and legacy.

This week, on Invisible Cities, Uma and author Rosie Milne take you back in time to discover the role that two remarkable women played in the founding of Singapore.