I wrote a post yesterday but it didn’t appear.
I have a full grid but don’t know 10ac surname and I’m unsure of the parsing of parts of some answers e.g. “than” in 8ac and the first half of 1dn.
I had a very small horse from the far north for 20 ac until sircrispin suggested a person and since I’d already used the “horse” category I went looking. Found him, never heard of him, reasonably grateful for it!