I tried 3 Street directories 1901, 1907,1910 with no Edgars listed in Fleet St on mary lennon s great website.
I know in Comber several edgars were signing up in 1911 to the Ulster Covenant , so I looked for Greyabbey
Edgar Agnes J Ballyboley Down: North Grey Abbey Grey Abbey
Edgar Alex A Ballyboley Down: North Grey Abbey Grey Abbey Phair, James : J P
Edgar Ellen Ballyboley Down: North Grey Abbey Grey Abbeyetc and
you could check Belfast as I did, I found none with Fleet St as an address, but there are lots of Edgars.
That connection to Greyabbey seems important do look up Ros Davies Co Down website
I wish you luck onwards, Jim
Hello Jim,
What about Ros Davies' site then

Does it not warrant a superlative adjective

How about one from the following list ... amazing, awesome, brilliant, fantastic, grand, great, marvellous, super, superb, terriffic.
Mary's site is a good one but much of the work compiling the directories which are used on her site are thanks to employees of James Alexander Henderson and even in more recent times Belfast and N.Ireland Directory, 51-67, Donegall Street, Belfast BT1 2GB and printed by The Universities Press (Belfast) Ltd.
Christopher