I think you're right, Andrew. Some of the letters in 'Richard' are quite different to others on the page: the h and d in particular. I've attached another 'Richard' from a later page for comparison. Also, 'Richard' seems to be not quite on the same line as the following words and there's a suspicious smudgy area around the name.
However, the 'Richard' document is the original and 'James' is the copy. This means that 'James' was put on the original first, which was then copied and sent off, and 'Richard' was a later correction.
So, this could still be the Richard I'm looking for (although maddys52's earlier caveat is noted).