<Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2017) (Learn how and when to remove this template message) </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> This section does not cite any sources . Please help improve this section by adding citations to reliable sources . Unsourced material may be challenged and removed . (September 2017) (Learn how and when to remove this template message) </Td> </Tr> <P> The opposing armies in the battle were led by the Roman Catholic King James II of England, Scotland, and Ireland and opposing him, his nephew and son - in - law, the Protestant King William III ("William of Orange") who had deposed James the previous year . James's supporters controlled much of Ireland and the Irish Parliament . James also enjoyed the support of his cousin, Louis XIV, who did not want to see a hostile monarch on the throne of England . Louis sent 6,000 French troops to Ireland to support the Irish Jacobites . William was already Stadtholder of the Netherlands and was able to call on Dutch and allied troops from Europe as well as England and Scotland . </P> <P> James was a seasoned officer who had proven his bravery when fighting for his brother--King Charles II--in Europe, notably at the Battle of the Dunes (1658). However, recent historians have noted that he was prone to panicking under pressure and making rash decisions, possibly due to the onset of the dementia which would overtake him completely in later years . </P>

Who led the jacobite army at the battle of the boyne