Thompson

An Irish surname of Antrim and Dublin. In the 2010 US census it was carried by 664,644 people, the 23rd most common surname in the country.

Thompson is the anglicised form of two distinct Irish names. Some you can hear in the English name; others look and sound nothing like it, and were simply swapped for it.

Mac Támhais, son of Thomas

Mac Tómais, Mac Tomáis, son of Thomas. This family stood in Co. Mayo.

Where the name comes from

Mac Tómais is son of Thomas, and it came to us from Scotland, reflecting an older pronunciation of the name; in Co. Mayo it is often made Ó Tómais. Mac Támhais is a variant of it, and gives MacTavish as well as Thompson.

The Giant's Causeway at twilight with wet hexagonal basalt columns stretching to the sea and long exposure blurred waves
The Giant's Causeway, Co. Antrim

The Thompson counties, photographed

Antrim

The Antrim coast road runs about 25 miles between the cliffs and the sea, with nine glens coming down to it. The rock is basalt, the same flow that formed the Giant's Causeway. Scotland is 12 miles off at the narrowest point and visible on a clear day.

The iconic Dark Hedges beech tree tunnel near Armoy in County Antrim with intertwined branches forming a brooding canopyThe Dark Hedges, Co. Antrim Co. Antrim Long exposure of Pan's Rock with its footbridge at dawn on the Antrim Causeway Coast, silky water and blurred clouds, Rathlin Island on the horizonPan's Rock, Co. Antrim Co. Antrim Sunrise over Colliery Bay with Fair Head cliffs and mountains, Co. Antrim, fine art landscape photograph by Peter CoxColliery Bay & Fair Head, Co. Antrim Co. Antrim Dunluce Castle on coastal cliffs with long exposure sea, Co. Antrim, fine art landscape photograph by Peter CoxDunluce Castle, Co. Antrim Co. Antrim Black and white photograph of a rainstorm sweeping across the Skerries islands off the North Antrim coast near PortrushRainstorm, the Skerries, Co. Antrim Co. Antrim Sunset over Bengore Head with waves rolling over rocks, Co. Antrim, Ireland — fine art landscape photograph by Peter CoxBengore Head, Co. Antrim Co. Antrim Sunset over the Skerries coast in County Antrim with warm light reflecting on wet sand and rock formationsThe Skerries, Co. Antrim Co. Antrim

Dublin

Dublin is a county as well as a city. The bay has Howth at the north end and Killiney Hill at the south, the Muglins are a pair of rocks off Dalkey, and the Dublin Mountains start about half an hour from the city centre.

Moonlight reflecting on the sea near the Muglins lighthouse off Dalkey Island, Dublin, with the Kish light on the horizonThe Muglins by Moonlight II Co. Dublin Long exposure panoramic view of the White Rock swimming platform at Killiney Bay, Dublin, floating in misty high-tide watersThe White Rock, Killiney Bay, Co. Dublin Co. Dublin Heron fishing at dawn on the Dublin coast — fine art wildlife photograph by Peter CoxHeron, Co. Dublin Co. Dublin

All Antrim prints · All Dublin prints

Notable bearers

Emma Thompson (born 1959), actor, writer, and screenwriter.

Hunter S. Thompson (1937-2005), writer, politician, and screenwriter.

Ken Thompson (born 1943), computer scientist and programmer.

Tessa Thompson (born 1983), actor, singer, and composer.

Elaine Thompson-Herah (born 1992), athletics competitor and sprinter.

This name is borne widely in Britain as well as Ireland. What follows is where it was found in Ireland, not a claim that every family carrying it came from here.

About this page

The counties on this page are where the name was thickest on the ground in Ireland a century and a half ago, not a claim about any one family. Names moved around inside the country as much as they left it. The photographs are mine, made in the counties named.

More Irish surnames: Smith · Brown · Miller · Wilson · Anderson · Thomas · Taylor · Moore · Jackson · Martin · Lee · White

How common the name was

In 1890, 317 births were registered under Thompson in Ireland, most of them in Antrim, Armagh, Down, Dublin, Londonderry, and Longford.

Ulster 239
Leinster 44
Munster 23
Connacht 11
Ireland 317

Armagh, Down, Londonderry, and Longford are the ones I haven't worked in.