Hi Michelle,
Welcome to Wikitree,
[Michelle Brooks] profile manager of Cyfidor b.1030 Gollwyn-2 is a very active wikitree member and knows a lot about very early profiles, I suggest you message her as I'm not sure how to tag her in this.
Prothero-9, Mattie b.1856 California has no profile manager so you could adopt this profile? As Reuben says, at the bottom of this profile it shows Mattie is only 18 degrees from wikitreer of the week Kay Smith.
I wonder if you meant Protheroe?? A quick look at your tree and a possible watchout, I think you may be creating additional profiles for early profiles for example Protheroe-58 is a possible duplicate of Rhydderch-12 managed by Tom Wilde..... The mine field of early welsh naming!!!