My great aunts given name was Bertha, but nearly everyone in the family called her Aunt Bert.
During WWII, she,among other things, drove a beer truck( delivering kegs and barrels) and worked as butcher( lifting and breaking sides of beef. This I witnessed in person at our butcher shop in the late '60s. She must have been in her early fifties at the time).
Aunt Bert was a tall-ish, slender lady, not at all un -feminine, but being raised with a house full of brothers, I'm sure she probably earned her nickname.
Choctaw