Sinann,
You've found so much great info. I had found that Georgina was a sibling (or perhaps a half sibling?) of Sarah Boulger (Bolger) Smith. I've wondered if William Boulger might have been married before and perhaps Georgina was from his first marriage (

?)
Ancestry.com has a Boulger family tree which lists a number of siblings to Georgina, Edmund (Edward?) and Sarah.
Georgina married a number of times and ended up in the U.S. I noticed that Edmund was a witness at Georgina's wedding and that it took place in a Church of Ireland church.
The 1901 census shows the divide in the family over religion. All of the males are listed as Church of Ireland members, while all of the females are listed as Catholic Church members. For some reason, Georgina and Sarah don't fit that pattern.
Fascinating stuff!