TonyF
Thank you for your reply. According to Jeanne Winder Bulfin, author of 'The Bulfins of Derrinlough', Lord Mayor Patrick Bulfin was married to 'Theresa Cline Carroll, daughter of a former Lord Mayor of Dublin'. This was Sir William Carroll, not as wrongly stated in a previous post, John Carroll. He would therefore have been a brother-in-law of John Simon.
I also came across the following in Connellan family pedigree - Library Ireland - see website.
A Dr. Francis John Boxwell Quinlan married Maude Elizabeth, eldest daughter of Dr Sir William Carroll, in 1867. This could be the 'Margaret Elizabeth' referred to in your list.
Regards