People of the Senedd

Siân Gwenllian MS

Siân Gwenllian MS

Senedd Constituency Member

Plaid Cymru

Plaid Cymru Group


My Senedd Activities

Add as new sub-points at end of point 5: Genuinely integrate health and care services nationally Train and recruit 6,000 additional staff into the NHS, including doctors, nurses and oth...

For debate on 17/09/2021

This Parliament: 1. Notes that it is 40 years since sisters from Wales traveled to Greenham Common to express their opposition to the installation of nuclear weapons there. 2. Recog...

For debate on 16/09/2021

To propose that the Senedd: 1. Recognises the change in work practices as a result of the COVID-19 pandemic and that this has brought with it many wellbeing and work-life balance benefit...

For debate on 15/09/2021

Will the Minister provide an update on support for women refugees from Afghanistan in Wales?

Tabled on 15/09/2021

What steps is the Welsh Government taking to ensure that rail passengers in Wales wear masks?

Tabled on 13/09/2021

Will the Minister make a statement on COVID-19 safety measures in schools?

Tabled on 09/09/2021

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.

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 Register of Interests

Cross Party Membership


Calendar events: Siân Gwenllian MS