shall be written with small "v" I think.
I have an (type) inheritance cup, dating from far back in my family in Germany and it says "Gerhard von Heuser" in addition to Coat of arms and a date from sometime in the 1800s.
so i think it shuld have small "v"
from wiki (
http://en.wikipedia.org/wiki/Von):
"The prefix "von" is not capitalized in German speaking countries, unless it begins a sentence – for instance, "A book by von Humboldt", but "Von Humboldt wrote this book."
This is in contrast to Dutch Van, which in the north (Netherlands) is capitalized when standing alone (unless part of a clause), and in the south (Belgium) is always capitalized – for instance, "A paper by Van der Waals", though "The van der Waals radius", and "The politician Eric Van Rompuy.""