In the recent chapter, Sarah says she is a Rockbell. Now, if Pinako and Winry are Rockbells, there are two possibilites.
1)Mr. Rockbell took Sarah's maiden name
2)She is adopting the name even though she isn't genetically related. (highly unlikely, she's the spitting image of Pinako *picture show in vol. 5, though her eyes are censored out*)
So, which do you think and why?
Wearer of the viking hat,
Gabby the Great
PS: What is Winry's father's name? I can't remember!