This is all IGC has on Landell:

Name William Landell
Address1 32 Gallowgate
Address2 106 Trongate
Address3 106 Trongate & Silvan Works, Broad Street, Mile End
Address4 108 Trongate
City/Town Glasgow
State/Region/Province Scotland
Country United Kingdom
Trade Cutler, Gun, Tool and Saw Maker, Ironmonger
Other Address
Dates 1846-1901
Notes
William Landell was recorded in 1846 at 32 Gallowgate, Glasgow.
In 1848 he was recorded at 106 Trongate, and from the mid 1870s until about 1900 he was also recorded at the Silvan Works, Broad Street, Mile End, Glasgow.

In 1901 he appears to have occupied 108 Trongate, but he seems to have closed soon after.

Tim