Restoration work on statues in a church near Kettering has got under way.
A £489,000 project to restore the so-called Montagu Monuments, at St Edmund’s Church, Warkton, received a £318,000 grant from the Heritage Lottery Fund last year.
The work is being overseen by the Prince’s Regeneration Trust.
Two of the sculptures are by the French 18th century rococo sculptor Louis-François Roubiliac, and all four marble sculptures are said to be of international significance.
The restoration has started with the cleaning of the most recent monument, which is dedicated to Lady Elizabeth Montagu, Duchess of Buccleuch.
Vanessa Harbar, from the Heritage Lottery Fund, said: “These four monumental statues are considered masterpieces of exceptional significance, spanning the Georgian era from 1749 to 1829.
“Problems with the monuments were first highlighted in the 1970s, it is great news that appropriate preservation work has now commenced.”