Scottish Gaelic words for "curly haired"

[Aprhys]

I wanted a Scottish equivalent of Cassidy, an Irish surname which was derived from Ó Caiside meaning "descendent of Caiside". Caiside is an Old Irish byname meaning "curly haired", from Irish Gaelic cas... anyone knows the Scottish Gaelic equivalent to "cas" and "caiside" (a word meaning "curly haired" in Scottish Gaelic)? And the way to anglicize it? I got casurlac which I anglicized to Macasurleigh but I am not very certain... (I added the Mac from "son of") I have also seen that elsewhere in the forums or elsewhere in another forum they say that "ruadhlaoislaodach" means "person with red curly hair" and as I guessed wiktionary had the word "ruadh" on its database meaning "red", but against my expectatives it did not recognize "laois", "laoisla" "laodach" or "odach" as words... "Laois" is recognized as a place name in ireland... which throws me off... Because I was thinking this was a Scottish gaelic word... Can anyone help?