In 1856 it was sold by Crawshay Bailey to the Memorial Committee established to commemorate the life of FitzRoy Somerset, 1st Baron Raglan, British commander during the Crimean War.

The house was completely rebuilt by Thomas Henry Wyatt and donated to Lord Raglan's heir, Richard Somerset as a memorial to his father.

[1] During the English Civil War, the Parliamentarian general Thomas Fairfax established his headquarters at Cefntilla while laying siege to Raglan Castle, some three miles to the north.

Enlisting in the British Army in 1804,[3] Somerset fought in the Napoleonic Wars, attaining the rank of lieutenant colonel and serving on the staff of the Duke of Wellington at the Battle of Waterloo.

[6] In 1858, a group of the late Lord Raglan's "friends and admirers and comrades"[1] purchased the house and estate as a memorial to him and presented it to Richard and his heirs in perpetuity.

While the barony passed to his younger brother Geoffrey,[8] the fifth lord bequeathed Cefntilla, its estate, and its major contents to the son of his sister, Henry van Moyland of Los Angeles.

[9] This led to a legal dispute between family members, at the conclusion of which the Raglan collection of military memorabilia, and many of the contents of the house, were sold at auction.