I (Alan Porter) have James Edward's dates as "after 1928" and "before 2000", which seems to fit with the birth date you have. He was the 4th child & 3rd son of George Donald Yeats (1898 - 1949) & Vera McAuley, and the grandson of William Lawrence Yeats (my great grandmother's brother). I found the Montana Yeats family about 4 years ago and visited that area about 3 years ago, meeting some of them and have contact with some of the family. I'd love to chat further about this connection. There is a fascinating story about Wm L. Yeats. You can email me at email@example.com
if you like. You can find me and my family on Facebook and my photos on Photobucket via photoduck.net. I don't have a marriage date for GD Yeats, a death date for Vera, or as you can see dates (or places) for James Edward. I have "Sharon?" for James Edward's wife's name, but nothing else about him or his family.