Alex's father might be a Whitfield. Maybe?
Wikipedia has some stuff about the Whitfield family of England who lived in Sussex. Their manor was granted to them by William the Lion which is interesting given Arthur's speech in season one about Alex being a lion. Also the quick scene showing the outside of her family house this season looked pretty similar to Rowfant House, the Whitfield estate. Yeah, I know it's a stretch but since it seems that TS likes have a little historical basis for some characters it seemed worth mentioning.