Complex sentence: Abbesse's dam, Festive, was sired by Carnival and produced four full-siblings to Abbesse, the colts L'Abbé Morin and The Black Prince (who was gelded and sent to Germany) and the fillies Travesty and Musley Maid.
Split into simpler sentences: Abbesse's dam, Festive, was sired by Carnival. Festive produced four full-siblings to Abbesse, the colts L'Abbé Morin and The Black Prince (who was gelded and sent to Germany) and the fillies Travesty and Musley Maid.