The tallest oak in the Republic of Ireland, according to the Irish Times, goes by the name of the Squire's Walking Stick. It stands beside the main avenue of Tullynally Castle, and the estate's own tree trail tells you to look for it on the left as you leave. The Telegraph went further. It called this the tallest oak in all of Ireland, at 112 feet, about 34 metres, and said the first Baron Longford planted it in 1745. Both the height and the date come from that one article, and nobody has published a measurement to check them against. The national heritage tree register tells a different story about age. In 2009 it put the demesne's named oak at 150 to 200 years, roughly a century short of 1745. Whether that register entry and this trunk are the same tree has not been shown, so the age here stays broad, somewhere between 200 and 280 years, until someone settles it. Thomas Pakenham, whose family owns Tullynally, has written about these grounds in In the Company of Trees. Stop eleven on the estate's tree trail is a young oak bred from the Walking Stick. Tullynally says its parkland is open to walkers all year, dogs on leads. The gardens are ticketed and seasonal, and it is not stated which side of that line this stretch of avenue falls on, so ask at reception.
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Getting there
Tullynally Castle demesne, Pakenham Hall Road, Castlepollard, Co. Westmeath (left of the main avenue on the way out)
You can recognise it by its height, a tall straight oak that stands above the other oaks around it. It is on the left of the main avenue as you drive out of Tullynally.
Estate-owned. Tullynally says the parkland with its magnificent trees is open to walkers, dogs on leads, throughout the year. The gardens (EUR 9 adult) are open 21 March to 27 September 2026, Thursday to Sunday 9am to 5pm (daily in Heritage Week). The estate's trail places this tree on the left of the main avenue on the way out; whether that stretch is inside the ticketed garden or free parkland is not stated, so ask at reception.
Castlepollard 2 km; Mullingar about 25 km. No public transport verified.
In fruit
The line is our estimate of how much there is to see, not a measurement. Typical for this species where this tree stands; exact weeks shift with the year.
Sources
Where the facts on this page come from. The story was written with AI from these sources, and readers who know the tree correct it.