tuppy on Family Tree Circles

My Munday's originated from around Surrey.
Have not been able to connect with anyone from the UK or Australia where some ancestors emigrated to.
Also connected to Munday's is the surnames of Howard, Spankhurst,Oliver, Nicholls, Fitzgibbon, Flowers.

My 5 x great grandfather was Samuel Benjamin Bellamy Bennett.
According to his death certificate he was born in Nottingham, but I am not sure about this.
He married my 5 x great grandmother in Richmond Victoria Australia
in 1854.
They had 3 children before their marriage, 2 living John and William.
All children were born in Richmond Victoria Australia.
My 5 x great grandmother was Elizabeth Taylor a convict transported to Van Diemens Land in 1829.
She married a William (Jeremiah)Smith before her marriage to Samuel.
They lived in Boundary Bend, the Victorian side of the Murray River near Swan Hill.
I would like to find any Bennett's who may be connected to Samuel as I know nothing about him apart from his marriage and after.
According to his death certificate he lived in both South Australia and New South Wales before his marriage.