Hi there,

There were lots of Thomsons in Beith 1841 Census - see below:

Bunswynd Thomson James M 25y cotton hand loom weaver AYR
Bunswynd Thomson Margaret F 25y AYR
Bunswynd Thomson Mary F 6y AYR
Bunswynd Thomson Jean F 3y AYR
Bunswynd Thomson Margaret F 1y AYR
Gurdie Thomson Margaret F 30y female servant AYR
Lochfaulds Thomson John M 40y railway lab OUC
Main Street Thomson William M 50y cotton hand loom weaver AYR
Main Street Thomson William M 20y painter AYR
Main Street Thomson Ann F 15y AYR
Main Street Thomson Martha F 13y AYR
Main Street Thomson Margaret F 5y AYR
New Street Thomson David M 10y OUC
New Street Thomson Margret F 8y OUC
New Street Thomson Mary F 6y OUC
New Street Thomson William M 4y OUC
Newton Thomson Hendry M 35y carpenter AYR
Newton Thomson Janet F 25y AYR
Newton Thomson Henry M 4y AYR
Newton Thomson Janet F 2y AYR
Newton Thomson Robert M 50y carrier AYR
Newton Thomson Margaret F 50y milliner AYR
Newton Thomson Robert M 25y carrier AYR
Newton Thomson Anne F 20y straw hat maker AYR
Newton Thomson Jane F 15y female servant AYR
Newton Thomson Mary F 15y milliner AYR
Townhead Thomson Margaret F 80y AYR
Townhead Thomson Robert M 40y vererinary surgeon OUC
Townhead Thomson Margaret F 35y AYR
Townhead Thomson Ann F 11y OUC
Townhead Thomson Elizabeth F 8y AYR
Whang Thomson William M 50y weaver AYR
Whang Thomson Agnes F 40y AYR
Whang Thomson James M 15y weaver's appren AYR
Whang Thomson John M 40y weaver AYR
Whang Thomson Janet F 40y AYR
Whang Thomson Janet F 3y AYR
Whang Thomson David M 7m AYR

Hope this is of some interest.

Regards

Duncan