 Little is known of the ancestry of the Yorkshire branch of the <unk> . At George Calvert 's <unk> , it was claimed that his family originally came from Flanders ( a Dutch @-@ speaking area today across the English Channel in modern @-@ day Kingdom of Belgium ) . Calvert 's father , ( an earlier ) Leonard was a country gentleman who had achieved some prominence as a tenant of Lord <unk> , and was wealthy enough to marry a " <unk> " of a noble line , Alicia or Alice <unk> ( or sometimes spelled : " <unk> " ) . He established his family on the estate of the later @-@ built Kiplin Hall , near <unk> in <unk> , of Yorkshire . George Calvert was born at Kiplin in late <unk> ( birth month and day yet to be researched ) . His mother Alicia / Alice died on 28 November <unk> , when he was fifteen years old . His father then married Grace <unk> ( or sometimes spelled : " <unk> " ) , Alicia 's first cousin . 
