There are thousands of clematis! This lovely database has a search feature that may help - enter the details such as tepal colour (petals to ordinary folk), anther colour, flowering period and then scroll thru the resulting lst to narrow it down. It's an academic list so no selling.
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"We don't stop playing because we grow old; we grow old because we stop playing." - George Bernard Shaw
I think they are the following:
Clematis 1 looks like http://clematisontheweb.org/new-clemdetail.cfm?dbkey=23
Clematis 3: http://clematisontheweb.org/new-clemdetail.cfm?dbkey=374
I'm not too sure about #2.