English: This is possibly the most difficult contribution I've ever had to make in this Senedd in the 15 years that I've been an Assembly Member. All of us in the Plaid Cymru family are beyond devastated that we've lost our friend and colleague, and our hearts go out to his family, who I know are in incredible pain at his loss. But Steffan is a loss to our nation too, to our democracy - he's a loss to our future. Steffan had one of the sharpest political brains in Welsh politics. He was incredibly well read, and he had an international understanding, which meant that he was always able to draw on examples - sometimes pretty obscure examples - to highlight or prove his point. As others have said, his contributions, especially on Brexit but on other matters too, were always considered, measured, well informed, and more often than not - not always, but more often than not - Steffan would end up being proved right. Plenty of people have paid tribute to Steff's public political contribution, and many of you here will be well aware of that, but I'd like to focus my brief remarks on Steffan as the person. We worked very closely together for around three years before he was elected as an Assembly Member. He was thorough, he could think outside the box, and he could think strategically. He was incredibly loyal and honest, and he was very prepared to say when he disagreed with something or he didn't like something. But he was also a team player, prepared to work extremely hard for the success of all of our shared goals. With Steff, no matter how difficult or insurmountable a problem might seem, he just would not accept that there was no solution. We tackled many tricky problems together, we made some fabulous political interventions together, and I've got some amazing memories of my work and friendship with Steffan, which I will now be able to keep forever. All of us are privileged to have memories, we're all privileged to have been part of his life, and we all want to pull together now to support his family and each other through the difficult weeks and months ahead. Nos da, Steffan. Sleep well, my friend.
Welsh: Hwn, o bosib, yw'r cyfraniad anoddaf y bu'n rhaid i mi ei wneud yn y Senedd hon erioed yn y 15 mlynedd yr wyf wedi bod yn Aelod Cynulliad. Mae pob un ohonom ni yn nheulu Plaid Cymru mewn galar eithafol o golli ein cyfaill a'n cydweithiwr, ac mae ein cydymdeimlad o waelod ein calonnau â'i deulu, y gwn eu bod ym mhoen eu hiraeth ar ôl ei golli ef. Ond mae Steffan yn golled i'n cenedl ni hefyd, i'n democratiaeth ni - mae'n golled i'n dyfodol ni. Roedd gan Steffan un o'r ymenyddiau gwleidyddol gorau yng ngwleidyddiaeth Cymru. Roedd wedi darllen yn anhygoel o eang, ac roedd ganddo ddealltwriaeth ryngwladol, a oedd yn golygu ei fod yn gallu tynnu ar enghreifftiau bob amser - enghreifftiau eithaf astrus weithiau - i dynnu sylw at neu brofi ei bwynt. Fel y soniodd eraill, roedd ei gyfraniadau, yn enwedig ar Brexit ond ar faterion eraill hefyd, bob amser yn ystyrlon, yn bwyllog, yn wybodus, ac yn amlach na pheidio - nid bob amser, ond yn amlach na pheidio - byddai Steffan yn cael ei brofi'n iawn yn y pen draw. Mae digonedd o bobl wedi rhoi teyrnged i gyfraniad gwleidyddol cyhoeddus Steff, a bydd llawer ohonoch chi yma yn ymwybodol iawn o hynny, ond hoffwn ganolbwyntio fy sylwadau i'n fyr ar Steffan fel person. Buom ni'n gweithio'n agos iawn gyda'n gilydd am tua thair blynedd cyn iddo gael ei ethol yn Aelod Cynulliad. Roedd yn drylwyr, gallai feddwl yn greadigol, a gallai feddwl yn strategol. Roedd yn hynod o deyrngar a gonest, ac roedd yn barod iawn i ddweud pan fyddai'n anghytuno â rhywbeth neu pan na fyddai'n hoffi rhywbeth. Ond roedd hefyd yn chwarae i'w dîm, yn barod i weithio'n galed iawn i sicrhau llwyddiant pob un o'n hamcanion cyffredin. Gyda Steff, ni waeth pa mor anodd neu anorchfygol y gallai'r broblem ymddangos, ni fyddai byth yn derbyn nad oedd unrhyw ateb i'w gael. Fe aethom ni i " r afael â llawer o broblemau anodd gyda'n gilydd, fe wnaethom ni rai ymyriadau gwleidyddol gwych gyda'n gilydd ac mae gennyf i atgofion rhyfeddol o'm gwaith a'm cyfeillgarwch gyda Steffan, y byddaf i nawr yn gallu eu trysori am byth. Mae pob un ohonom wedi ein breintio o gael atgofion, a bod yn rhan o'i fywyd, ac rydym ni i gyd yn awyddus i dynnu gyda'n gilydd nawr i gefnogi ei deulu a chefnogi ein gilydd drwy'r wythnosau a'r misoedd anodd nesaf. Nos da, Steffan. Cwsg yn dawel, fy ffrind.