I read somewhere that the monument had been altered. Originally there was no pen and paper, and he had on his lap a cushion or sack of some sort. Ye Pillow.
Anyway, it seems peculiar that he’d go to the trouble of commissioning his monument, yet never having his portrait done.
Also, when he died, his son-in-law mentioned it in his journal with words to the effect of, “my father-in-law died today.”
They made little fuss about him until much later.
That’s show biz.