REMOVE

1. Columns
2. MARNOCK, Robert

WHAT

1. Architecture -- England - … (2)
2. Buildings -- Repair and r … (2)
3. Capitals (Architecture), … (2)
4. Garden structures (2)

WHERE

1. ENGLAND, UK (2)
2. Sheffield, South Yorkshir … (2)

WHO

1. BROOMFIELD TAYLOR, Benjam … (2)

WHEN

1. 1836 (2)