First of all: Thanks for the many (over 2500 in only 2 months!) contributions you are making on Wikitree! Also thanks for asking advice here on g2g when you're in any doubt.
I had a look at the profile of James Thompson, and also at some other profiles you added, and I noticed that you often use "family trees", without further details, as only source. Certainly for the (pre-1500) James Thompson profile, but also for pre-1700, and in fact almost all profiles it would be good to be more specific.
A good source citation informs other users on what exactly your source is and how they can access that source (and the easier you can make that for them, the better). The benefit for the profiles you manage is that other users are more inclined to trust the information when you provide a detailed source citation (even if they don't actually check the source). And above all: it facilitates collaboration on those profiles.
I'm not implying that any of the information you provided is wrong, just that, without source, there's no way for me and others to form an idea about it.
Here and here is some more information!