This small brass is a thick plate (c.5mm) engraved with four standing sons, all slightly different in their stance and faces. In 2012 William Lack identified its origin. These four figures were engraved by the Cambridge school of which there are about 70 known brasses and indents. The majority are in counties close to Cambridgeshire and 90% have been recorded in the The County Series volumes for Bedfordshire, Buckinghamshire, Cambridgeshire, Essex, Hertfordshire and Huntingdonshire. William searched the database of this information and concluded that the children originated from a brass at Wimpole which he had conserved in 1993. To be absolutely certain he visited the church to determine that a rubbing of the sons fitted the indent perfectly. The brass, originally comprising two figures, an inscription and two rectangular plates for sons and daughter, is now mutilated with only two plates surviving in the church.

Soane spent time at Wimpole from 1791-93 working on the Hall and produced proposals for work on the adjoining estate church. Sometime during his time there he must have acquired the loose little plate and brought it back to Lincoln's Inn Fields.

Monumental Brass Society, Bulletin 119, February 2012, pp.366-367