I first met John and Catherine in the late '70s or early '80s at one of the Eisteddfods at what was then SMU and is now UMass, Dartmouth, and enjoyed time with them at the Eisteddfod and again at Howard Glasser's home, where Catherine taught me to make her tomato soup - which I do to this day, and always with thoughts of them. John gave my son patient lessons on playing the Jew's harp. We also met at Fox Hollow which we attended regularly.
Years later, when John was working on reconstructing medieval instruments based on measurements he made at the cathedral, Santiago de Compostela, in Compostela, Spain, I had the joy and privilege of visiting them in Paris and of seeing and receiving John's video of some of that work.
We have sadly been out of contact since then.
My thoughts are with you, Catherine, at this very hard time, and with all your and John's extended families.