baldric - i think he does indeed - under the bridge and round to the right. anyway I had his number in my mobile phone (btw) don't use mobile. He doesn't teach clarinet. Lovely man.
Try Genes Reunited. On the right hand side of the page, they have a People Finder. If you know the approximate year they were born, or the place they were born it's helpful, as it narrows the search, but it's not essential, it just means that you'll have more 'finds' and more people to view. One or two searches you'll get for free, then they tend to try and get you to buy a month's subscription to them. If you're only looking for Frank Martin, you should be fine.