In this context, the symbol was referred to as St Patrick's Cross.

Links to the St Patrick's Cross have been proposed.

In this version the innermost points of the lower left and upper right diagonals of the St Patrick's cross are cut off or truncated.

The royal couple were twice applauded by onlookers, and were shown a replica of the 12th-century St Patrick's Cross before visiting the cathedral.

The St Patrick's Cross was added to the Union Flag and, accordingly, to the first quarters of the British ensigns.

In recent years, the St Patrick's Cross has been used on St Patrick's day in Northern Ireland.

St Patrick's Hill, Liverpool, on old maps of the town near to the former location of "St Patrick's Cross"

The flag created as a consequence of the merger combined the flags of England and Scotland with "St Patrick's Cross" to represent Ireland.

The addition of Ireland to the Kingdom of Great Britain in 1801 saw St Patrick's cross incorporated into the design, forming the Union flag which is still used today.

The St Patrick's Cross is commonly identified with the arms of the FitzGeralds, a Cambro-Norman family which became powerful in Ireland, and who also owned land in Jersey.

Another way of looking at it is that the white diagonal St Andrew's Cross and the red diagonal St Patrick's Cross sit side-by-side along the centre-lines of the diagonals.

John Ratcliffe is shown holding a Union Jack flag (incorporating Ireland's St Patrick's Cross) when founding Jamestown, when in fact this design was not used until 1801 (after Ireland united with Great Britain).

With the Act of Union 1800, Ireland joined the United Kingdom and St Patrick's Cross was added to the Union Flag and, accordingly, to the cantons of all British ensigns from 1 January 1801.

The red saltire on the silver field is for Lennox, in which province the District lies; as it is also a St Patrick's cross, it is doubly appropriate since parts of the parishes of Old and New Kilpatrick are within the District.

From 1801, in order to symbolise the union of the Kingdom of Great Britain with the Kingdom of Ireland a new design, which included the St Patrick's Cross, was adopted for the flag of the United Kingdom of Great Britain and Ireland.