Thank you very much. This is one of several puzzles.
N.S.W Assisted Immigrants 'Earl Dalhousie' arrival date: 7 May 1877
Name: THORNLEY William
Birth Year: abt 1855
Native Place & County: Leigh, Lancashire
Parent’s names, & if alive their residence: Thomas – (24 Lloyd street, Leigh)
Religious Denomination: Wesleyan
Read & Write: Both
Relations in the Colony: None
No sign of spouse Betsy in the shipping records. Their marriage:
Marriages Dec 1876
Thornley William Bolton 8c 383
BALL Betsey Bolton 8c 383
So William came out very soon after their marriage. Their first child born in NSW as far as I can see was John in 1881. That's quite a gap so something does not add up. I have just seen a funeral notice which mentions a Mr & Mrs W G SLOMAN:
# 7491/1906 SLOMAN WILLIAM G THORNLEY MARY A LITHGOW
Death # 1527/1954 SLOMAN MARY ALICE WILLIAM BETTY CHATSWOOD
So it looks as though Mary Alice is the first born. Now, was she born in England and therefore did Betsy and newborn arrive after William? Or was she born in NSW between 1877 and 1881 but her birth not registered?
The Sydney Morning Herald (NSW : 1842-1954) - Saturday 1 September 1906
... Despite the excessively wet weather there was a large gathering at St Paul's Church of England, Lithgow on Thursday afternoon, when Miss Mary Alice Thornley, eldest surviving daughter
of Mr. William Thornley general manager of Eskbank Ironworks, was married to Mr. William George Sloman, second son of Mr. George Sloman of Granville. The church had been decorated by friends of the bride and over the altar hung a large wedding bell. The Rev. R. J. Cameron officiated. Miss Ethel [born 1887] Thornley (sister of the bride) and Miss Grimshaw (of Sydney) were the bridesmaids...
So it seems other daughters were born and died young. That explains the gap.
Please see what you can find. Thanks.