How do you spell maclaren in Gaelic?

There isn't a single, universally accepted Gaelic spelling for "Maclaren." Gaelic (both Scottish Gaelic and Irish Gaelic) is quite flexible, and the translation depends on the intended pronunciation and the specific clan/family history.

To get a potential spelling, you'd need to know the original Gaelic form of the name upon which "Maclaren" is based. "Maclaren" is clearly a name formed with the prefix "Mac" (son of) and a personal name (probably "Laren" or a similar variant). Different forms of "Laren" could lead to various Gaelic spellings.

Therefore, to find an accurate Gaelic spelling, you would need genealogical research to determine the original Gaelic name. Then, a Gaelic speaker or expert could provide an appropriate spelling.