We didnt mention it in the 2019 thread so i will keep looking Here comes the 2019 pear harvest!
We know there is some question about the leaves of the two you have Magness and Warren sibling pears
In 2018 they took the year off Here comes the 2018 apple & pear harvest!
Magness is discussed briefly here Pear research is yielding results - #6 by clarkinks