The statue was dedicated to Mercury Quillenius, an epithet used to refer to a Celtic god or the Greek Kulúvios.
TNMM618
Mercurio / Quillenio A(ulus) / Ibliomarius / Placidus nego(otiator) / cas(tello) Mat(tiacorum) lanius / v(otum) s(olvit) l(ibens) l(aetus) m(erito).