Alun Ffred Jones, the Plaid Cymru Assembly Member for Arfon, has announced he will step down at the next election.
He was first elected to the Assembly as Plaid Cymru AM for Caernarfon in 2003.
It is an honour representing the people of Arfon and my intention is to continue the work with all my energy until the next election. By then I will have worked for nearly 45 years and the time has come to step back while I am still healthy and active.
Getting new blood with a fresh outlook is healthy in politics and we need that in the Assembly. This is a new and exciting period for Wales with new powers for the Assembly, but there is a huge amount of work to be done to revive our economy.
More top news
Conner Marshall, 18, died after a 'vicious and unprovoked attack' in Porthcawl in 2015.
A new campaign is being launched to tackle arson in Wrexham following a number of attacks in the area.
ITV Wales can reveal thousands of patients have waited over an hour for an ambulance since the 'amber' category was introduced last year