Note: MCL Valluvan is NOT on Google Fonts. But if you want a similar style for the web, use Noto Sans Tamil.
To make your text look like a professional print house: Tamil Font Mcl Valluvan Free Downloadl
Below is a blog post focused on the legitimate features of the font, its importance in Tamil computing, and how to safely obtain and use it. Note: MCL Valluvan is NOT on Google Fonts
The search term (with the common typo "Downloadl") typically refers to a specific need for a classical Tamil typeface used primarily in academic, literary, and religious publishing. its importance in Tamil computing