Sentence:  One had never stepped in a rowing boat until 2008, the other will return to serve in the Royal Artillery in September. But Glover and Stanning will now go down in the record books as the first <WSD>homegrown</WSD> gold medallists of the London 2012 Olympics. 
Meaning of the word marked with <WSD> tags:  Raised or brought up in one's own country.