People of the Senedd

Siân Gwenllian MS

Siân Gwenllian MS

Senedd Constituency Member

Plaid Cymru

Plaid Cymru Group


My Senedd Activities

Will the Minister make a statement on the timescale for publishing the Welsh Baccalaureate results for 2021?

Tabled on 16/07/2021

This Senedd: 1. Notes that Mudiad Meithrin is celebrating its 50th birthday. 2. Further notes that its mission and the purpose of its work is to use the early years as a medium to...

For debate on 09/07/2021

To propose that this Senedd: 1. Notes the recent publication of several reports by the Bevan Foundation and the Wales Anti-Poverty Coalition on expanding the provision of free school mea...

For debate on 07/07/2021

To propose that the Senedd: Calls for an independent public inquiry into the handling of the COVID-19 pandemic in Wales.

For debate on 07/07/2021

Will the First Minister make a statement on additional support for emergency health services in Arfon over the coming months?

Tabled on 01/07/2021

What is the timetable for the Welsh Government's quick free lunch survey and when will the survey be published?

Tabled on 24/06/2021

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