I'm not surprised you weren't sure Liviani as Starch 'Maker' would seem different from 'Starcher'?
'https://www.wordnik.com/words/starcher'
Have you checked earlier census records & where was this to check out possible places he could have been employed?
Annie
I've not had much joy in finding Robert in any census.
This image is from the death certificate of his daughter Ann Thomson. Ann was born c.1833 Montrose, Angus (Forfarshire) to Robert Thomson and Barbara Wood as named on Ann's death cert.
Not had any joy tracking anything down regarding Ann's birth, Robert and Barbara's marriage
or anything regarding Robert or Barbara in various census.Though, Ann did marry a Francis Stewart in Montrose in 1858 so I'd imagine Robert and Barbara remained in this area?
Edit:
Tried a different database and found this on FreeCen;
Piece: SCT1841/312 Place: Montrose -Angus Enumeration District: 1
Civil Parish: Montrose Ecclesiastical Parish, Village or Island: -
Folio: 18 Page: 6
Address: Fishergate
Surname First name(s) Sex Age Occupation Where Born Remarks
THOMSON Robert M 30 Labourer Angus
THOMSON Barbara F 25 Angus
THOMSON Charles M 10 Angus
THOMSON Ann F 6 Angus
and in 1851
Piece: SCT1851/312 Place: Montrose -Angus Enumeration District: 8
Civil Parish: Montrose Ecclesiastical Parish, Village or Island: Montrose Burgh
Folio: 254 Page: 10 Schedule: 59
Address: Castle Street
Surname First name(s) Rel Status Sex Age Occupation Where Born Remarks
THOMSON Robert Head M M 38 General Labourer Angus - Montrose
THOMSON Barbara Wife M F 40 Angus - Montrose