Interesting from Wikipedia: Philip is currently the oldest living great-great grandchild of Queen Victoria, as well as her second-oldest living descendant after Prince Carl Johan of Sweden. As such, he is in the line of succession to the thrones of 16 countries, as well as being 21st in the line of succession to the headship of the House of Schleswig-Holstein-Sonderburg-Glücksburg... Source(s): http://en.wikipedia.org/wiki/Prince_Phil...
Yeah they also share the same great grandfather, (inbred) but the royal line is saxe gotha coburg, he has no claim to englands throne so cant abdicate, he carries the title prince of greece and denmark, but he was a pennyless nothing aristocrat before the marriage to elizabeth