Wigan players:

GEORGE Harrison - don't know what the R stands for
EDDIE Holder
LEN Mason
CHARLIE Seeling (Jnr)

I'll have a look through some old books/programmes. G Parker was a Huddersfield player, if that helps.

Jack McDonald was an interesting character. He played for the Maori Union team before signing to play RL in London, then for Huddersfield & Rochdale. He was allowed back into union during the war and played for England against Wales. He won a gold medal for rowing in the Empire (Commonwealth Games) and was at the 1932 Olympics in LA and played tennis at Wimbledon!

'Blacklaus' is probably Cyril Blacklaws who played for Rochdale H and (I think) St Helens.
AS Logan = Allan Logan
J Cutbush = William John ('Jack') Cutbush who played for Halifax, Rochdale H and Streatham & Mitcham as well as Acton & Willesden

All 3 of the above were New Zealanders

R Gaunt = Roy Gaunt who was a Canadian from British Columbia

Parker was transferred to LEEDS in 1934 so someone from there might be able to help

GWYN parker ex Neath RU signed for Huddersfield in August 1927 then went to Leeds in 1934. Just had to go back in time to find his name

Thanks prehensile and Durham Giant. I'll probably be calling on your knowledge in the future! Thanks again.