Duggan Family - Tipperary, Killenaule, Cashel areas

Hello, looking for further information about the Duggan family who are in Killenaule and Cashel areas of Tipperary. John (our direct ancestor) was born in Killenaule in 1819 and we've found out from a very helpful gentleman (Paul in Killenaule) that John had the siblings Michael (1822), William (1825), Thomas (1828), Pat (1831) and Cath (1835).

Their parents are Michael Duggan and Ellen Hall. Struggling to find out any further information - where and when Michael and Ellen were born? Who are their parents? When and where did they get married? Who their siblings were? Who John's siblings married and who their decendents are? When and where did any of them die?

John Duggan went to Staffordshire in England, got married in 1860 and died in 1891.

If anyone has any further information or documents/photos they can point us in the right direction of we'd be very grateful.

Thanks very much!
Rebecca