Her parents appear to have been George Lyons and Katherine/Catherine Lyons (cousins?). George was from Ireland, Kerry possibly, but Katherine was born in Clerkenwell.
"England and Wales Census, 1901," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:X9D7-JNV : 20 May 2019), Norah M Lyons in household of George Lyons, St Pancras, Middlesex, England, United Kingdom; from "1901 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing Gray'S Inn Lane subdistrict, PRO RG 13, The National Archives, Kew, Surrey
By 1911 George has died and Katherine has remarried Robert Boyd.
"England and Wales Census, 1911," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:XWGJ-4ZX : 8 May 2019), Norah Lyons in household of Robert Boyd, London, England, United Kingdom; from "1911 England and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO RG 14, The National Archives of the UK, Kew, Surrey
I added some sources and tidied up the profile a bit. Norah remarried after James Crowder died to William Shannon and the way wikitree works her "current last name" is now used by default so that may be confusing at first.
