It's difficult to conceive that Steffan was a Member of the Assembly for such a short time, so great was his contribution. We sat here in this Chamber and in committees and we saw how considerable his knowledge was and, of course, his desire to service his country. He quite quickly became respected by so many around this Chamber in all parties, and when he spoke, what he said was always incisive and thought-provoking. Steffan was always worth listening to.

He offered so much to the debate on Brexit through his work on developing a vision from how Brexit should work to the suggestion of a continuity Bill. And I believe he was the first Member in this Chamber to suggest a continuity Bill and he deserves the credit for that.

On a personal level, I think it's entirely right to say that Steffan was well liked by all. He was a proud member of Plaid Cymru. We've all seen, of course, the photograph of him addressing the Plaid Cymru conference in 1987 when he was, I think, 14. That would have taken a considerable feat of confidence to be able to do that. But despite, of course, his strongly held principles, he was always ready to work with other parties when he felt it was for the good of the nation. We often aspire, don't we, as politicians, to work with others? But Steffan didn't just aspire to do that; he practised it as well.

I, for one, found his contribution to the debate on Brexit to be invaluable, and some of you will know that I was asked before Christmas in a tv interview to name those I respected in other parties. Without disrespect to others in the Chamber, Steffan was one of those names that I mentioned.

The news that Steffan had been diagnosed, of course, with cancer, was a great shock to him and to his family. There's no doubt about that. He shared his diagnosis with me. He knew that my wife, Lisa, worked for Macmillan. He knew that it was a very difficult prognosis, but, despite that, he carried on with his work and worked hard to raise money for those who are living with cancer, and those memories, of course, will be there amongst so many Members who remember the work that he did to raise money for Velindre. There would of course have been low moments in his fight against cancer, but one thing we do know is that he found the resolve and the strength to inspire others. There are very few people with those qualities. Steffan was one of them.

We have lost a future star of Welsh politics, but his family have lost a son, a brother, a husband and father, and today we stand with them and remember Steffan.