It's possible you're thinking of:
* R.S. Thomas, a Welsh poet, known for his religious and rural-themed work.
* Dylan Thomas, a famous Welsh poet, known for his lyrical style and works like "Do Not Go Gentle into That Good Night."
* R.H. Thomas, a science fiction and fantasy author, known for his "Star Wars" novels.
Could you provide more information about the author you're looking for, such as their full name, any specific genres they write in, or any titles you remember?