An authority can require that such part of a payment be repaid where payment has already been made in respect of any period during which the member or co-opted member concerned:
Gall awdurdod fynnu bod y cyfryw ran o daliad yn cael ei had-dalu pan fydd taliad eisoes wedi'i wneud ar gyfer unrhyw gyfnod pan fydd yr aelod neu'r aelod cyflogedig dan sylw: