This is the 8521st most frequent Chinese word.
siddall
It seems "siddall" is not a Chinese word. It might be a proper noun or misspelling. Can you clarify?
Here, 'Siddall' is referred to as a proper noun and a subject of the sentence, meaning a person's name.
Siddall 是一个名字。
Siddall is a name.
In this instance, 'Siddall' is used as a proper noun indicating a geographical location.
我住在一个叫 Siddall 的地方。
I live in a place called Siddall.
Here, 'Siddall' is used as a family name, illustrating a person's surname.