Mary Morgan didn't marry William Granger - perhaps because Joseph was still alive.
An inquest followed by a hearing took place after her death as Mary Morgan alias Granger near Tarleton on the Mersey on the 19th Sep,1866. William Granger was arrested on the charge of murder. A witness,Mary Williams,who knew her at Flights Bay (Waterloo)on the Huon near modern day Geeveston stated during the hearing that Mary was still married to Joseph at the time but she gave the name Joseph Morgan not Hosking.
A Joseph Morgan, farmer and wife with 3 sons and 3 boarders was recorded at Flights Bay in the VDL Census of 1851.
The age groups correspond to what the 3 known Hosking boys would have been at the time.
Even when a bushfire was recorded in the area in 1853, a newspaper reported that Joseph Morgan, a weakly man had lost everything in the fire.
These records might suggest that Joseph may have used Mary's maiden name as an alias for a period of time.
Joseph Hosking died in the Geeveston area in 1879. No record of a death of a Joseph Morgan in the area is known of.
The 2nd family of Mary and William were sent to the Queens Orphan School in Newtown near Hobart Town following William's arrest and imprisonment. They were returned to him at some stage after his acquittal in Jan, 1867.