Cando, with respect to your info; I think I need a tutorial in getting information out of the BDM Historical Search. I have not been able to find a record of Michael or Patrick's birth, nor for that matter Emma's or her marriage.
I do not use the online search. Many of us have our own resources.
If there was no marriage and if the children were illegitimate and Emma was in troubled circumstances, she obviously didn't register their births. Many Roman Catholics considered the baptism sufficient 'registration' and ignored the civil registration.
I agree with Sue comments re the 1889 birth certificate details.
What were Wm and Emma's ages?
Where were they born?
Where were they married?
What was the place of birth?
What are the ages of Patrick and Alfred?....I would suggest this is Michael Alfred.
Who registered the birth?
Your reference to William Charles
RIGBY living at Ballarat. None of the births to Wm and Harriet
CAPLE were at Ballarat. Have your taken your information from his obituary in various newspapers of the day? You would have to see the death certificates to find the places of death.
I very much doubt he was in Ballarat at all. Employed by his ?father in law. His wife was still in Melbourne in 1860. If you think Emma is his dau I would suggest you purchase the 1858 birth certificate for Mary as all previous issue of the marriage would be listed.
1856 Victorian Electoral Roll
RIGBY William Charles 29 Collins Street. Shopman
Nature of Qualification Salary
Description or particulars of Qualification £100 James CAPLE, Collins Street.
Birth – with mother’s surname error…see death below
RIGBY Harry
Father William Charles Mother Harriet WRIGHT
At Melbourne 1856 Reg#3851
Death
RIGBY Harry
Father William Charles Mother Harriet CAPLE
9 months Born Melbourne 1857 Reg#433
Birth
RIGBY Mary
Father William Charles Mother Harriet CAPLE
At Melbourne 1858 Reg#10203
Death….birth not registered
RIGBY Charles
Father William Charles Mother Harriet CAPLE
1860 8 days Born St Kilda Reg#12252
Birth in South Australia
RIGBY Ada Harriet
26 May 1863
Father William Charles RIGBY Mother Ada Harriet CAPLE
At Adelaide Ade27/286
Death
RIGBY Ada Harriet
5 Mar 1865 21 months Status Child Relative William Charles RIGBY [Father]
Residence Adelaide Death Adelaide Ade 18/109
Births
RIGBY Ada
30 Aug 1866
Father William Charles RIGBY Mother Harriet CAPEL
At Adelaide Ade 33/630
RIGBY Lilian
26 Mar: 1871
Father William Charles RIGBY Mother Harriet CAPLE
At Adelaide Ade 93/17
A rather 'glowing' obituary
http://shrinkalink.com/60941The deceased has left three daughters— Mrs. Mary Ringwood of Barnard street, North Adelaide; Mrs. Lillian Meth, and Miss Ada Rigby, of East Adelaide—and six grandchildren. His wife died many years ago.Cheers
Cando