People of the Senedd

Siân Gwenllian MS

Siân Gwenllian MS

Senedd Constituency Member

Plaid Cymru

Plaid Cymru Group


My Senedd Activities

Add as new point at end of motion: Believes that the annual report and legislative programme demonstrate that the Welsh Government does not have all the levers necessary to ensure meanin...

For debate on 07/07/2022

Add as new point at end of motion: Welcomes that the Cooperation Agreement between Plaid Cymru and the Welsh Government has secured the inclusion of a number of transformational policies...

For debate on 07/07/2022

What was the outcome of the discussions that Ministers had with stakeholders in Bangor about plans to improve the city centre?

Tabled on 07/07/2022

Will the Minister provide an update on the position of dental services provided through the NHS in Arfon?

Tabled on 06/07/2022

What discussions has the First Minister had with the Minister for Rural Affairs and North Wales and other Ministers about plans to improve Bangor city centre?

Tabled on 30/06/2022

To propose that the Senedd: Calls on the Welsh Government to revise the winter fuel support scheme to make it fit for purpose in tackling the cost-of-living crisis. 

For debate on 29/06/2022

More information and calendar events

Detailed information: Siân Gwenllian MS


Key interests and achievements

Siân was elected to the National Assembly in 2016. She represents the Arfon constituency as a member of Plaid Cymru.  Siân was re-elected to the Welsh Parliament in 2021, doubling her majority with 63.3% of the vote - the highest percentage of any Member of the Welsh Parliament. Her interests outside politics include theatre, art, the Welsh music scene, football and rugby.

Personal history

Siân was educated at Ysgol Friars, Bangor and at Aberystwyth and Cardiff Universities. After losing her husband she brought up her 4 children on her own. She has been a passionate campaigner for women's equality and the Welsh language for over 45 years.

Professional background

Siân worked as a journalist with the BBC, HTV and Golwg. She also worked in public relations including as press officer for Gwynedd Council.

Political history

Siân was active with a number of community organizations, both as a school governor and as a community councillor. Between 2008 and 2016 she served as a councillor on Gwynedd Council, representing the village where she grew up, Y Felinheli. Between 2010 and 2012 she was responsible for the authority's finance portfolio and between 2012 and 2014 she was a member of the Cabinet for education, children and young people and Deputy Leader of the Council. In 2014 Siân was appointed as Gwynedd's small business champion, responsible for promoting this sector of the economy in the county. She was Chairman of the Arfon Constituency Committee for Plaid Cymru.

Media Assets

Register of Interests

Register of Interests – Fifth Senedd (PDF, 3.25MB)


Terms of office

  1. 06/05/2016 - 28/04/2021
  2. 08/05/2021 -

View Current Register of Interests

Cross Party Membership


Calendar events: Siân Gwenllian MS