Senuna was a Celtic goddess worshipped in Roman Britain. She was unknown until a cache of 26 votive offerings to her were discovered in 2002 in an undisclosed field at Ashwell End in Hertfordshire by metal detectorist Alan Meek. Her imagery shows evidence of syncretism between a pre-Roman goddess with the Roman Minerva (for a parallel, cf. Sulis Minerva, the Romano-British goddess worshipped at Bath).

Senuna's shrine consisted of a ritual midden, onto which offerings were thrown, surrounded by a complex of buildings including workshops and accommodation for pilgrims. It was certainly no humble crossroads shrine. The dedicatory artefacts kept in the shrine were subsequently buried together on the edge of the midden, perhaps intended for temporary safe-keeping, in the late 3rd or 4th century CE.^[1]

The offerings to Senuna include silver plaques with gold highlights, seven gold plaques and a superb set of jewellery, including a brooch and cloak clasps. The plaques still have the metal tabs which allowed them to be set upright, and are so thin that they would then have shivered and glittered in any draught. Some votive plaques were punched out in tiny holes, some incised. The jewellery incorporated older gems and glass beads, including a superb carved cameo of a lion trampling an ox skull which was already old and worn before it was set into the brooch. All of the jewellery shared intricate decoration in minutely coiled wire, and the set may have been specially made as an offering. An exhibit of offerings to Senuna may be seen in Room 49 of the British Museum, labelled "Near Baldock Hoard".^[2]

As well as the jewellery, there were deposits of Celtic coins, mostly several centuries old at the time of deposition, and of Bronze Age metalwork, perhaps collected from local round barrows. There were also food offerings of piglets and small quantities of cremated human bone.

The Senuna hoard includes at least five inscriptions. One example reads,

DEAE SENVA[...../ FIRMANVS[...../ V[SLM]

"To the goddess Senua[.....] Firmanus [.....] willingly fulfilled his vow."^[2]

Another inscription found on a votive offering of jewellery was left by a man named Servandus of Spain:

"Servandus Hispani willingly fulfilled his vow to the goddess".^[3]

The silver figurine portrays Senuna as a graceful woman with hair coiled in a bun. The breast and face of the goddess rotted away in the soil centuries ago. Her arms have been reconstructed with pieces (No. A2 & A3) from the Ashwell-hoard. She appears to have been holding some ears of corn in her right hand and a phiale or placenta (a sacrificial cake) in her left hand.^[4] She is believed to have been originally positioned on a pedestal (No. A1a) bearing the inscription: d(eae) Senun(a)e Flavia Cunoris v(otum) s(olvens) l(ibens) m(erito).^[5]

At least twelve of the votive plaques show classical images of Minerva, with spear, shield and owl; the five of these that carried an inscription were dedicated to Senuna rather than Minerva.^[2]

Senuna's name appears in various forms on the votive plaques, namely Senuna, Sena, and Senua.^[2] Conceivably it might be related to the Proto-Celtic *seno- 'old'.^[6] In the Ravenna Cosmography senua forms part of one name located most likely in the Solent.^{[citation needed]}

The discovery of offerings to Senuna has inspired various practitioners of modern Neopaganism in the United States and Britain.^[7]

• Dea Senuna: Treasure, Cult and Ritual at Ashwell, Hertfordshire (2018). Ralph Jackson and Gilbert Burleigh, British Museum Press, ISBN 9780861591947.
• Portable Antiquities Scheme - Hoard PAS-9708E3. Finds.org.uk.