Currently, Elizabeth Holand (Holland-887), wife of Roger Fiennes (Fynes-3), shows John Holland-577 KG and Elizabeth Lancaster-459 as her parents. This John Holland-577, on WikiTree, is a son of Thomas Holland-32 and grandson of Robert Holland-33.
Richardson, in Royal Ancestry, Vol 3, p 297, and Vol 2, p 580, shows her parents as Sir John Holand by his (2nd) wife, Margaret (Unknown). This Sir John Holand is a son of Sir Robert de Holand (Holland-597) (d 16 Mar 1372/3) by his wife Elizabeth (Unknown), a brother of Thomas Holland-32 and a son of Robert Holland-33.
I am concluding that there should be two John Hollands (Holland-577 KG and yet to be created/found Sir John Holand), who would have been first cousins, and that Elizabeth Holland-887 is currently attached to the wrong parents.
(a side issue, to further complicate the matter, Richardson does not show Robert de Holand (Holland-597) marrying Margaret Hetton-1)
Does anyone have information that would lead to a different conclusion?