Hi Di,
William and Mary-Ann had a farm at Leaffoney near a small town called Kilglass in Co. Sligo, Ireland. They had 11 children:
James c1842 - 1899 stayed on the farm in Ireland m. Jane Carroll, had 7 children
Alica c1844 - 1920 immigrated to Victoria, m Joseph Boucher , had 6 children
Mary-Jane c1851 - 1908 immigrated to Victoria, m. George Faux, had 11 children
Matilda-Sophia, c1850 - 1897, immigrated to Victoria 1870, m. William Fielder, had 5 children
William 1852 - 1923, immigrated to Southport, Queensland, m. Emily Wells, 3 children
Annie 1853- 1877, immigrated to Victoria 1870 (with Matilda) m. Robert Grosert, no children
John 1858 - 1930, immigrated to New Zealand, m. Margaret King, 5 children
Acheson 1860 - 1927, immigrated to New Zealand, m. Agnes Johnston, 10 children
Alexander
Margaret
Deborah
We know what became of 8 of William and Mary-Ann's 11 children. (all except Alexander, Margaret and Deborah). Five immigrated to Australia, and two to New Zealand. There is a story that one, or maybe two, of the daughters and their husbands set sail for New Zealand but the ship was lost at sea and they were never heard of again. The ship may have been the "Knowsley Hall" in 1879/80, but I haven't been able to confirm this.
I'm not allowed to send you my email address but can send personal massages somehow. I have quite a bit of information about the Greer family I can provide you.
Regards,
Ray