Indian Christian Marriage Act,1872
7. Marriage Registrar
The State Government may appoint one or more Christians, either by name or as holding any office for the time being, to be the Marriage Registrar or Marriage Registrars for any district subject to its administration.
Senior Marriage Registrars
Where there are more Marriage Registrars than one in any district, the State Government shall appoint one of them to be the Senior Marriage Registrar.
Magistrate when to be Marriage Registrar
When there is only one Marriage Registrar in a district, and such Registrar is absent from such district, or ill, or when his office is temporarily vacant, the Magistrate of the district shall act as, and be, Marriage Registrar thereof during such absence, illness, or temporary vacancy.