To some extent Olly’s own needs have had to come second to those of his sisters and he copes with this with remarkable resilience and a level of maturity that belies his age.
I ryw raddau bu'n rhaid i anghenion Oly ei hun ddod yn ail i rai ei chwiorydd ac mae'n ymdopi â hyn gyda chadernid rhyfeddol a lefel o aeddfedrwydd sy'n fwy na’i oedran.