The funeral takes place today of Grace McSweeney and Luke McSweeney, who died in last Friday night's crash in Clonmel.
The collision claimed the lives of four young adults.
Large crowds are expected to attend the siblings funeral mass in Clonmel this morning.
The cortege will make its way from Mountain Road to the quays and into the town centre, with mass taking place at 11.30am at St Peter and Paul's Church on Gladstone Street.
Chief celebrant will be Fr Billy Meehan, parish priest of St Mary's in Clonmel, who baptised Grace and Luke and also officiated at the wedding of their parents, Paul and Bridget.
Nicole Murphy was buried yesterday in Kilcash, while the funeral of Zoey Coffey takes place tomorrow.