Sugahara
Sugawara
proper noun
Sedge field is both Sugahara and Sugawara, the Japanese family names. Sedgefield is a family name (and a place-name) in English too, so that might help you with this one!
すがはら
すがわら
The only reading you haven't learned for this name is the irregular わら reading for 原, so here's a mnemonic to help you:
Sugawara-san went to war a (わら) long time ago, but these days he enjoys a quiet life tending to his sedge fields.
菅原っていう苗字、なんかかっこよくね？
Sugahara's a cool surname, isn't it?
あれ、菅原さん、風邪ですか？
Oh, Sugawara-san, do you have a cold?
菅原靴店で、オシャレな革靴を買った。
At Sugawara Shoe Store, I bought a pair of stylish leather shoes.