I was searching on the Web to find family related stuff, and came across your post.
I think the Charlotte you are mentioning is my father's father's sister.
My family name is spelled "Krempeaux", although it was spelled differently before.
My full name is: "Charles Iliya Krempeaux".
My father, whose name is "Charles Robert Krempeaux", was born in Canada.
My father's father, whose name is "Charles Stanislaus Krempeaux", came to Canada from France. I also think he might have lived in England too. Do note that my father's father's middle name ("Stanislaus") seems like Polish spelling of the name "Stanley".
My father's father (Charles Stanislaus Krempeaux) had 2 sisters. One of the sisters is named "Charlotte".
The surname "Krempeaux" has a French spelling. The -eaux at the end of the name makes it seem French. I was told by someone once that an "x" at the end of a French surname name suggests the family may have immigrated to France.
(I do not know if the information about French family names ending in an "x" is accurate or not; but if true seems relevant.)
My father's sister, whose name is "Audrey Jane Krempeaux", investigated the Krempeaux family history. I'm drawing from memories from when I was very very young (probably some time in the early to mid 1980s), but what I remember is that family came from France to Canada, but was originally in Poland. I also remember her (verbally) telling me that our surname "Krempeaux" was originally something like "Kremposki". I was verbally told this and did not see it written down, so I don't know how it was actually spelled.
I noticed that the photo you attached is named "lottie_Krempoiski_dads_godmother.jpg". "Krempoiski" seems like the name that my aunt -- Audrey Jane Krempeaux -- told me "Krempeaux" was originally.
My father (Charles Robert Krempeaux) also had a brother, named "Paul Douglas Krempeaux". When my brother, whose name is "Hassan Robert Krempeaux", was talking to Paul years ago (I think in 1996 or 1997) Paul mentioned to my brother (who goes by his middle name "Robert" or just "Rob") that "Krempeaux" is not the actual family name, and that the family left Poland.
I found this document on the Web today:
https://www.thegazette.co.uk/London/issue/41629/page/1017/data.pdfIt lists Charlotte's full name as: "KREMPOWIECKI, Charlotte Elizabeth". (In the surname first style.)
I found it because it also listed my father's father (Charles Stanislas Krempeaux) (i.e, Charlotte's brother) in the document. (Although this document does not explicitly describe Charles Stanislas Krempeaux and Charlotte's relation.)
Although I've heard of "Krempoiski" before, this is the first time (I think) I've seen the name "Krempowiecki" in terms of my family history.
Also note, I believe "Krempowiecki" might have an alternative spelling of "Krępowiecki".
(I started searching "Krempowiecki" and "Krępowiecki" and found your post.)
Note also, I found something else on the Internet that indicated my father's father's father's name is "Thadeus". (Although I think the document I found had "Thadeus" spelled as "Thadias".)
If you would like to get in touch, my e-mail address is: cikrempeaux (at) gmail (dot) com
-- Charles Iliya Krempeaux
(Posted on Friday January 15th, 2016)