Margery is the original spelling,
Marjorie is a spelling variant. Just like
Kaitlyn is a variant of
Caitlin. I will never understand how
Marjorie became the most popular spelling just as I will never understand how
Kaitlyn became more common than the beautiful
Caitlin.
Margery looks so much nicer!
I actually really like
Margery. It's cute, has a nice meaning and gives me a medieval feel, kind of like
Cecily. I read somewhere once that its closeness to the word margarine might have killed it and I think that might be true. Anyway, I don't really think of the word when I hear it and in my opinion it is ready for a comeback! I like it much much more than
Marjorie which looks odd to me and I like it a bit more than
Margaret.
Yes, I think it is used occasionally but it isn't popular anymore at all.
Similar names in style would be other medieval favorites like
Cecily,
Amice,
Amity,
Alice,
Alison,
Jane,
Mary etc.
Similar in sound would be
Marnie,
Marilyn,
Marguerite,
Maren,
Marina,
Margie (maybe as a nickname for it) and also names with a similar rhythym such as
Melody,
Hilary etc.