I gathered a couple of tributes to Gerard after his passing. Perhaps they may be of interest

A Lament for Van der Leun: I’ll be searching everywhere, just to find someone who cares.

Remembering Gerard Van der Leun: Bon Voyage, — Mon Semblable, — Mon Frère!

And most certainly those posts from his close companion, Neo

From Neo’s Site

I too have a black cat …