ok I've found the birth registration again and it is for Oliver Richard Hindmarsh registered Jan 1907 and his birth date given at his death was Jan 7th 1907, married Clarice Cutts in 27 Aug 1927 at Royston St John the Baptist. Barnsley. and his father given in the marriage register is (waiting or it to load!) James Hindmarsh and Clarice's father was George Edward Cutts, the original image of the marriage register is slow to load too.
I'm confusing myself now, the marriage in Barnsley in 1927 was for Oliver father James and Oliver was 26 a miner of station road royston his father james was deceased also a miner, a james hindmarshh signed as a witness, and so this is not the one EK wants then?
The Oliver who married Clarice was not Oliver Richard, but just Oliver who was born in 1902ish. Oliver Richard died in 1907, the Oliver whose marriage you found died in 1990.