I have previously looked at this man for someone else who was related but cannot find it online.
I remember being interested in the events of 1852. As wivenhoe said, Lavinia was firstly married to Edwin SHIPWAY and came to Australia in 1851. By May 1852 she had left Edwin:
CAUTION - The public are cautioned against harbouring or trusting my wife, LAVINIA SHIPWAY, she having left her home without any just cause or provocation. I will not be responsible for any debts contracted by her from this date. 11462 EDWIN SHIPWAY, Canterbury.
http://trove.nla.gov.au/ndp/del/article/12936859In October 1852 she was in Melbourne where she gave birth to a daughter Mary Jane and then she returned to Sydney where the child died before the end of the year. The date function is not working for this burial in the online indexes but an online tree suggests that she was buried on 20 November. Just two weeks later, on 4 December 1852, Lavina married James WILLIAMS by licence in Sydney as a spinster under her maiden surname.
They promptly went to Adelaide where their daughter Lavinia was born in 1853, and then to Tasmania where the daughter died at Hobart in March 1855 and a son James was born in October.
The rest of the children were born in Victoria:
Isaac John (1857-1860)
Louis Frederick (1859-1918)
Eleanor/Elletta Lavinia (1861-1875)
John Phelps Thompson (1863-1925)
Arthur George (1865-1866)
Bertha Slape (1866-1942) (SKINNER)
Blanche Ellen ( 1869-1913) (MacKINNON)
For reference, Lavinia's parents were Isaac THOMPSON and Jane PHELPS, siblings were Charlotte, Lewis Frederick, Eleanor Jane, Asenath Amelia, Uriel Oswin, Sophia Lucilla, Augusta Edith, and Rodelinda Rowena who married James SHIPWAY, Edwin's brother.
A number of James' children's names have come from Lavinia's family, but I wonder if 'Bertha Slape' is a clue as she was the only one registered with that middle name.
James could have been living in either NSW or Victoria when he met Lavinia, but I can't understand why they married in Sydney right under her husband's nose. I wonder if James knew
And Edwin SHIPWAY has children with Catherine in NSW...no marriage to see for this couple.
They married in 1856 and interestingly it seems that this was the first marriage registered in NSW when civil reg began.
1856
#1
SHIPWAY, EDWIN
LOUGHRAM, CATHERINE
SYDNEY
How apt that the first marriage should be bigamous
Debra