What are the connotations of the word 拳拳?
When I first saw it, I thought it meant fist fist. By the way, I think the same word appearing twice in name usually is only appropriate in girls' names; it makes the name cute. If you are a guy, you probably don't want that.

But there is a 成语（4 word idiom with well known meanings) that says 拳拳之心 (heart of 拳拳) which is an adjective that means forever remembering in heart.