In my family tree, there are three separate Darmody family's that married
into one Kelly Family.

Andrew Kelly married Ellen Darmody and after her death, married Bridget Darmody; and

Patrick Kelly (Andrew's brother) married Ellen Darmody.

All the surnames were spelt as Darmody after their arrival into Australia, but the surname was spelt Dermody in Ireland.

At this stage, it is unknown whether any of them were related.

Ellen Darmody was born 1816 in County Kilkenny, the daughter of Jeremiah Darmody and Ellen Curtis.

There is one reference to Jeremiah in the Griffiths Valuation
DARMODY Jeremiah Tipperary Thurles Kilrush

Ellen married Andrew Kelly in 1839 in Ballycallan, Kilkenny.  They left Ireland for Australia, shortly after the birth of their first child in 1841, and eventually settled in the Tower Hill area.

Ellen and Andrew had 6 children;

Ellen died, in 1866, at the age of 50 and was buried at the Tower Hill Cemetery, Victoria.
Andrew's remarried Bridget Darmody in 1867 - details below.

Bridget Darmody, born 1842, was the daughter of Thomas Dermody and Margaret Ford.

There are 11  references to Thomas Dermody in the Griffiths Valuation -2 in Kilkenny.
DERMODY Thomas Kilkenny Kilmanagh Kilbraghan
DERMODY Thomas Kilkenny Kilree Kilree

Bridget married Andrew Kelly married 30 Nov 1867 in St Patricks Church Belfast Victoria (Australia).
Bridget and Andrew had six children (three dying in infancy);

Andrew died in 1879 and was buried at the Tower Hill cemetery.  Bridget died in 1906 at Port Fairy aged 67 and is buried with Andrew at Tower Hill.

Ellen Darmody, born 1830, was the daughter of John Dermody and Cath Kelly.

There are 33 references to John in the Griffith Valuation - 16 for Kilkenny alone
DERMODY John  Kilkenny Kilmanagh Knockeenbaun

From letters received from her parents and brother in Ireland, it has been established that the family was from Knockenbaum, a townland in Kilmanagh, County Kilkenny.

From these letters it has also been established that Ellen had brothers and sisters that also migrated to Victoria, Australia.  The siblings were; Johanna, Mary, Jeremiah, and Julia - Michael being the brother that wrote the letters from Ireland.

Ellen married Patrick Kelly in 1855 in Tower Hill, Victoria.
They had 10 children;

Darmody Page