One who holds the same office in a chapel (of the established Church of England), as a churchwarden holds in a church: now commonly replaced by churchwarden.
1688. Lond. Gaz., No. 2375/1. The Churchwardens, Chapelwardens, and Sidesmen.
1753. Scots Mag., XV. Sept., 435/1. The churchwardens and chapelwardens of every parish or chapelry.
1834. in J. Raine, Mem. J. Hodgson (1858), II. 330. Your letter was read communicating to the chapelwardens your resignation of the living.