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William Rowan Hamilton Plaque, near Clonsilla

William Rowan Hamilton Plaque is a monument in County Dublin, 7.8 km east of Clonsilla.

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Here as he walked by on the 16th of October 1843 Sir William Rowan Hamilton in a flash of genius discovered the fundamental formula for quaternion multiplication i² = j² = k² = ijk = −1 & cut it on a stone of this bridge.
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Monuments
From Clonsilla
7.8 km east, in a straight line
Website
www.maths.tcd.ie/pub/HistMath/People/Hamilton/Letters/BroomeBridge.html

Getting to William Rowan Hamilton Plaque

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Public transport times come from National Transport Authority. Timetables cover 2026-09-18 to 2027-09-19. These are scheduled services; check with the operator for cancellations and changes before travelling.

Walking and driving times are estimates. A town search starts at its centre; choose your location or a point on the map for a more precise starting point. Eircode search is not available.

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Destination, access and nearby stops

William Rowan Hamilton Plaque is in Clonsilla, County Dublin. Routes here end at the point the map records for this place. No entrance has been verified, so the last few metres are for you to judge.

It is 7.8 km east of the centre of Clonsilla in a straight line. The map records no stop within walking distance.
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Stops near it

The nearest scheduled stop is Broombridge (8367), 80 m away in a straight line. Use the planner to check walking connections for your journey.

  • Broombridge 80 m
    bus L89
    Scheduled departures from this stop
  • Lagan Road 200 m
    buses N2, 40E and L89
    Scheduled departures from this stop
  • Carnlough Road 220 m
    buses 120 and 40E
    Scheduled departures from this stop
  • Broombridge Station 220 m
    bus 120
    Scheduled departures from this stop
  • Ventry Park 330 m
    buses 120 and 40E
    Scheduled departures from this stop

Getting to Clonsilla covers the journeys into the town itself.

Other monuments in Clonsilla

Nearest to William Rowan Hamilton Plaque first, and the figure beside each one is how far it is from William Rowan Hamilton Plaque, in a straight line. Same point, same measure.

All 190 monuments in Clonsilla

Questions people ask

Where is William Rowan Hamilton Plaque?
Near Clonsilla, County Dublin, 7.8 km east of the centre.
How do you contact William Rowan Hamilton Plaque?
Contact William Rowan Hamilton Plaque. Visit www.maths.tcd.ie/pub/HistMath/People/Hamilton/Letters/BroomeBridge.html.
How far is William Rowan Hamilton Plaque from the centre of Clonsilla?
7.8 km east of the centre, measured in a straight line. The map above can work out the walk along the footpaths from wherever you are.
Are there other monuments near William Rowan Hamilton Plaque?
190 in Clonsilla altogether. The nearest are 1981 Hunger Strikers, 1916 Rising and Patrick Hickey.
How do you get to William Rowan Hamilton Plaque without a car?
The nearest stop in the national timetable is Broombridge, 80 m away in a straight line, and bus L89 call there, run by Bus Átha Cliath – Dublin Bus. The planner on this page works out the walk from that stop over real footways and the whole journey from wherever you are starting, for the day and time you choose.

Where this comes from

From the map
The name, the kind of place, the address where the record carries one, and any website, phone or opening hours shown as recorded on the map are tags on OpenStreetMap node/448606595, and can be corrected there.
Worked out here
Every distance, the nearest road where the record has no address, which car park and which stop are nearest, and the order of the lists are this site’s own calculations from those records. Distances are straight lines between two points, not walks along the footpaths, and the map will route the real walk on request. A mistake in any of this is a mistake here rather than on the map.

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