it isn't both aren't even theories but products of simpleton invention without basis and are completely undoubtedly incorrect i favor none i delete d them both because afaik there are none sources at all on this issue the house of saint vladimir is of descent from a travunian local noble house with doubtable links to the house of trpimirovic and most surely no link to the house of viseslavic however i must object putting it as a separate line tvrtko asserted rule and his line tvrtkovic is historically considered the main line of the kotromanics as for the trpimirovic branches i suggest following standard historical interpretation of the svetoslavic being a cadet branch whereas the other being the simple continuation of the standard trpimirovic line kresimirovic