The 'Jehu' family is huge and some branches have been traced back to 1550. I have 400 Jehu's in my tree but it does not include your grandparents. My family was mainly based in Montgomeryshire and Shropshire, so I expect that there is a link with your Evelyn Jehu a few generations back. Are you able to provide names of her parents and grandparents? Kind regards, Graham.