Marcia you can search yourself
https://www.bdm.qld.gov.au/IndexSearch/BirIndexQry.m1919/B23935
HAY John Seton
HENRYS Patricia
The B in the registration number indicates they were married in Brisbane.
Birth information in Victoria is only available to 1920.
There is this information on the 1936 Electoral Roll for Qld
HAY John Seton, Waverley, Sixth Avenue, Sandgate No occupation listed.
HAY Patricia
May Waverley, Sixth Avenue, Sandgate Home duties.
The 1915 marriage information was for a Patricia
Jessie...
1949 Qld Electoral roll
HAY John Seton, 84 Little Chester Street, Teneriffe. Salesman
HAY Patricia, 84 Little Chester Street, Teneriffe.
K.
Edit..later
I see many requests for info on your family when googling...but there is this one, so you have info about Patricia and the first marriage and her full name.
John Seton Hay was born in Wadestown in1889. He married Jessie May Patricia Ludlow , who had been married to a John… ..