Hi Ronnie, I tried for you www.vorfahrensuche.de - 1 person is looking also for HOUTZER !
home page, click on the left : NAMEN, type HOU - all names starting with HOU are coming out, click on HOUTZER, - and if you want to have the name of the person who submitted the tree, click on the right - EINSENDER !!!
Good hunting and best greetings from PARIS, Sigi