Flower

I can’t remember the name of this flower , maybe someone can tell me?
I went out to blip the daffodils but noticed at least three blooms and lots of buds on this plant. Our friends have to us for our Silver wedding eight years ago so I am quite proud it has lasted this long as I just plonked it in the front garden. I think it is lacking something as the buds have brown bits on them and some of the leaves are yellow rather than green. A lovely evening with some sunshine.