Charlene,
What is your source for Kate's dob?
Considering that we can't find birth on SP, it is very specific.
Is it simply from the IGI entry that Carole mentions?
What other info can you add? Have you found travel from UK to US? Who did she travel with? Husbands name? Married in UK? Is Sir J rumour or fact? etc
Sorry, I can be a bit slow and need things spelled out.
Dave