Irene Howat Irene Howat is an awardwinning biographer who has also written childrens biographies of Isobel Kuhn; George Mueller; John Newton; Adoniram Judson; Robert Murray McCheyne, Helen Roseveare, James Chalmers and Jim Elliot. She is also the author of the bestselling Light Keepers biographies. Irene lives on the beautiful Argyll peninsula in Scotland with her husband Angus.