Please see the User guide to marriage statistics (Office for National Statistics) and the Marriages in England and Wales quality and methodology information (Office for National Statistics).
Gweler y Canllaw i Ddefnyddwyr ar ystadegau priodasau (SYG) a’r Wybodaeth Ansawdd a Methodoleg am Briodasau yng Nghymru a Lloegr (SYG) i gael gwybodaeth am ansawdd a methodoleg.