Doing a quick search through Burke's "General Armory" finds two different Mann coats of arms with lions on them, and two different Hudson coats of arms with lions on them, but no coats of arms at all for Castledine (under any spelling). This is not to say that these are the only arms for these names that have lions on them, only that these are the only ones in Burke, which only contains about 60,000 coats of arms for the British Isles. There may be others which do not appear in Burke.
However, in none of these arms are the lions the main element: in the Mann arms, there are three lions placed about a chevron (an inverted V shape); in one of the Hudson arms, there is one lion (and two boar's heads) placed about a fess (a wide horizontal stripe); and in the other Hudson arms, three lions appear on a fess, which fess is between three boar's heads.
So I don't see any of these coats being a good candidate for the arms you are seeking.
I'm sorry that we are not being of much assistance to you here.