Nerwyn Letitia is a full sister to Nerwyn Lowri, Nerwyn Lilian, Nerwyn Lara and Nerwyn Lilia

She was shown very successfully as a youngster. During 2002, her many winnings included 1st prizes at the Bath & West, East Anglian Natives; 2nd at the Three Counties and both Section A and Supreme Champion at Babell Medal Show. In 2003 she was equally as successful, winning 2nd prize at the Bath & West, 1st and Section A Champion at the Clwyd WPCA's Summer Show and Supreme Champion at the North Western Association's Spring Show.

In 2007 Letitia came out to be shown as a brood mare for the first time. Cheshire 2nd Junior Mare, North Wales Show 2nd broodmare, Royal Welsh Show 2nd junior mare class, Welsh National Show 1st broodmare and overall Section A Champion, 3rd Rhydspence Championships and finally Eglwysbach Show 1st broodmare class, overall Section A champion and Supreme Champion of the show. 2008 results : Cheshire County-1st Junior Broodmare class. North Wales Show,Caernarfon-1st Broodmare, Champion section A and overall Supreme Welsh exhibit. Royal Welsh show-2nd junior broodmare class. Welsh National-2nd broodmare class. Anglesey County-1st junior broodmare, Champion broodmare and overall section A Champion. Denbigh and Flint County show-1st junior broodmare and overall section A Champion.