I am convinced there is a link. The marriage info showing Elizabeth's father as Francis and Robert's father as Joseph sounds right. Dad recalls the name Joseph in the Yates family.
Having hit a wall on the other side of my tree so to speak, I will now throw my energy into the McAlearneys which have been sorely neglected.
I am hopeful that I have found another sister, Isabella and so I am determined to find your Elizabeth too.
Ellen, Elizabeth's sister was baptised at St Mary's Catholic Church Douglas.
Francis was Irish born and was a fisherman.
Helen (Ellen) Kearns was born in Peel.
The McAlearneys seem to have disappeared by the 1881 census.
I wonder if they went to Ireland for a time?
I have some ideas to follow up. I hope one of us is in luck.