sequestra
Frieze-Dennison Vergil
sequestra , ae, f.: one with whom something is placed in trust; sequestrā pāce, a mediatory peace; a truce, 11.133. (sequor)
sĕquestra, ae, v. sequester, II. B. 1.
sĕquestra, æ, f. , médiatrice : Stat. Th. 7, 542 || entremetteuse : Apul. M. 9, 15.