Complex sentence: In February, 2016, James and Daniel Kelly organized a rally at Doe Castle and in April, 1916 they assembled a march of 32 men during the Easter Rising in Donegal.
Split into simpler sentences: In February, 2016, James, along with Daniel Kelly organized a rally at Doe Castle. In April, 1916, he led a group of 32 men during the Easter Rising in Donegal.