From Brian Lawson's registered births it appears that the "George L." given as son in the censuses was actually their grandson: George Lewis BANNAN, birth reg. 9 Mar 1889 Peel, father Not given, mother BANNAN, Margaret.
Also BANNAN, William Arthur 5 Oct 1891 Peel, father Not given, mother BANNAN, Margaret.

Also BANNON, John Caesar 20 Sep 1898 Peel, father Not given, mother BANNON, Henrietta.

Henrietta BANNAN b.1 Mar 1880 Peel marr John BRIDSON 22 July 1899.
1901 census Eng, Lancashire, Barrow in Furness 22 Emlyn St.
John Bridson 24 Lab shipyard IOM
Henrietta wife 22 IOM
John son 2 IOM [John Caesar Bannan b. 20 Sep 1898 Peel]

Sue