Tom Senior is not a British citizen. Why would he want a coat of arms?
Agree. It makes no sense for someone foreign, with no allegiance to the crown, being granted a coat of arms, not so?
If you read through some of the older posts (I have a hard time keeping up with them too) you'll see that much of the discussion has centered around whether Thomas Markle Sr. will receive a coat of arms or if it will be granted to Meghan alone.
British citizenship isn't required. U.S. citizens are eligible if they can prove descent from a subject of the British crown prior to American independence (Thomas Markle can). Refer to post #37.