For a person's title:
* Marquis: This is the standard spelling for the title, meaning a nobleman of high rank.
For a brand or product name:
* Marquis: This is the standard spelling for a brand or product name. However, if it's a specific brand or product, you might need to check their official spelling.
For a place or location:
* Marquis: This is likely the correct spelling for a place or location. However, again, you might need to check specific sources for the correct spelling.
Other considerations:
* Font and style: Consider the font and style you are using for your sign. A more formal or elegant font might look better with a traditional spelling like "Marquis."
* Target audience: Consider your target audience and what they are familiar with. If your audience is more likely to see the name spelled a different way, you might want to consider using that spelling.
Ultimately, the best way to spell "marquis" for a sign is to choose the spelling that is most clear, accurate, and appropriate for the context.