I found a 1901 census with Thomas Lilley 43 (1858), general dealer, born Shoreditch,
living at 16 Chapman Rd, West ham, Essex, living with his wife & children & his brother William Lilley, 33 (1868), single & a lath line maker, born Shoreditch.
The places of birth & the ages match well with the sons in the 1871 census with parents William & Ellen.
In 1891, the brothers are living at Camden Street, Bethnal Green, both born Hackney (part of Shoreditch?),
If these are the correct brothers, I would be considering the possibility that their parents have died since the single brother is not living with them.
sherrbert Do you think the above mentioned Thomas Lilley on 1901c is your Grt. Grt. Grandad?1901 census reference no. RG13; Piece: 1569; Folio: 23; Page: 37
and the
1891 census reference no. RG12; Piece: 263; Folio: 50; Page: 20 with
Thomas 28, Mary A 25 , Mary A 10mths & William Lilley 26
Mmm...

I wonder if this
might be Thomas Lilley age 20 Bethnal Green occ. Hawker Pictures Books on 1881census
https://familysearch.org/ark:/61903/1:1:QK6T-6B1THere's the marriage details for Thomas Lilley to Mary Ann, his father is named William
31 Mar 1890 St Philip, Bethnal Green
Thomas Lilley 27 General Dealer
Father William General Dealer
Mary Ann Larner 24 father John labourer
Both single, both signed their name, both res. 79 Church Street
Witnessed by
Wm Lilley & Mary Ann Olliff her (x) mark
for info. baptisms of their children
Mary Ann Elizabeth Nelly Lilley Born 30 Jun
Baptism 20 Jul 1890 St James the Great Bethnal Green
f. Thomas
occ Dealer m. Mary Ann
abode 79 Church St.
Thomas Robert Lilley Born 20 Nov
Baptism 6 Dec 1891 St James the Great Bethnal Green
f. Thomas ,
occ Dealer m. Mary Ann
Abode 24 Ponderson Gardens
Ellen Louisa LillyBaptism 8 Feb 1893 St Andrew Bethnal Green
f. Thomas
occ General Dealer m. Mary Ann
abode 49 Viaduct Street
James John Lilley born 12 Oct
Baptism 11 Nov 1894 St Jude Bethnal Green
f. Thomas
occ General Dealer m. Mary Ann
abode 1 Poyser Street
William Richard Lilley Born : 8 Jun
Baptism 5 Jul 1896 St Jude
f. Thomas
occ General Dealer m. Mary Ann
abode 1 Poyser Street
Ada Emma Lilley born 12 Nov
Baptism 5 Dec 1897 St Jude
f. Thomas
occ General Dealer m. Mary Ann
abode 1 Poyser St
When Ellen Louisa Lilley married John Redgrave 24th Dec 1916 her father Thomas general dealer is noted as deceased
Her mother Mary Ann is widowed by 1911 and she died 1937
Mary A Lilley age 72 (1865)
Dec 1937 West Ham 4a 48
This looks to be Thomas' death entry
Thomas Lilley age 48 (1860)
Dec 1908 W.Ham 4a 169