He had the following children:
+ 2 M i Austria collector Penley + 3 M ii Germany collector Penley + 4 M iii Switzerland collector Penley + 5 M iv Italy collector Penley + 6 M v Norway collector Penley + 7 M vi Prussia collector Penley + 8 M vii France collector Penley + 9 M viii Russia collector Penley + 10 M ix Finland Collector Penley + 11 M x Portugal collector Penley + 12 M xi Spain collector Penley + 13 M xii Sweden collector Penley + 14 M xiii Czechoslavakia collector Penley