Your chap George born Woolwich, is with his Uncle Leopold in 1901 Islington - so w/o his birth Cert, the census years arent going to ID which of Arnolds sons was his Father ...... altho if the Frances in the 1891 census was his sister, she is with parents William and Emma in Hornsey (the family I showed in Highbury in 1891)
1901 - RG13/1241; Folio: 140; Page: 21 - Hornsey
41,Glebe Road
Wm H Glasspool 42 Head Jeweller PoB NK
Emma J Glasspool 41 Wife Clapham
Frances E Glasspool 19 dau Walthamstow
Leopold E Glasspool 15 son do
Horace C Glasspool 12 son Canonbury
Maud E Glasspool 10 dau do
Reginald Glasspool 8 son do
Leonard A Glasspool 6 son do