I am also descended from James Willan and Elizabeth Smithson. Their daughters, Elizabeth and Ruth were married to the same man, Richard Pennock.Elizabeth married him in 1807 and had two children, Stephen and Mary. Elizabeth and Mary both died in 1811, but I don't know whether it was during child birth or not. Ruth married Richard, it appears also in 1811. Their son James, who was born in 1816, is my grgr grandfather.