There are three Isaac REECE deaths listed on NSW BMD - unfortunately no ages given in the index.
1872 Isaac REECE, father Isaac; mother Edith, Mudgee Reg 4989
1919 Isaac REECE, father Isaac; mother not listed, Molong Reg 16218
1918 Isaac REECE father, Edwin; mother Mary A, Sydney Reg 24
I think the 1872 death is the father who was 34 (b abt 1805) when he emigrated in 1839 and the 1919 death is Isaac (b abt 1829) who married Annie Adelaide.
Annie's marriage to William Townsend 1869
1869 William TOWNSEND = Annie A REECE at Warialda Reg 3634
So I wonder if Annie had divorced Isaac or is there just no record of his death or was this a bigamous marriage?? (Unfortunately there are no NSW divorces online prior to 1873)
By the way the baby Flora b 1863 died the next year. Interesting that what we think is Annie's surname appears as her given name in this record.
1864 Flora REECE father Isaac; mother MADRAH Scone Reg 5783
Do you have any records for Henry REECE - I cannot see any on the NSWBMD - the only Henry mentioned is the brother of Isaac (Annie's husband) who died at sea aged 2, before they arrived in Australia. There is a Henry REECE died Liverpool Australia 1869 aged 88 (b abt 1781) thus too old to be a brother of either of the Isaacs. I see no other record of this older Henry.
Judith