Thank you for the update. I went back to the 1901 and 1911 census returns to see if I could find an Ellen or Margaret Brett/Bitt/ Bet/Brit, etc, who may have become nuns, but the search was unsuccessful. From the birth indexes noted in the first reply, Ellen was born in 1879, and so she would have been 22 years old in 1901 and 32 years old in 1911. I’m not sure when Margaret Brett was born, as I didn’t find a birth index for her.
It’s possible, if either Ellen or Margaret were nuns, they may have been missed in the 1901 and 1911 enumerations, or perhaps they entered religious orders when they were older. It would be helpful if the 1921 census were available for research, but it’s my understanding that the National Archives of Ireland only releases the census returns after 100 years, and so it’ll be at least 8 more years before we can search the 1921 enumeration, unless the NA agrees to a release date earlier than 100 years.
On the chance that Ellen or Margaret became nuns and then emigrated to the U.S., or first emigrated to the U.S. and then became nuns, I looked for the in the 1900-1930 census returns, but didn’t find them.
Cathy, if you learn anything new, please let me know.