A recent British study revealed that putting male names before female names (say, in addressing an envelope) is a remnant of 16th century sexist thinking. Here's an example of the finding:
One hundred and 21 people were asked to imagine a heterosexual couple who were either 'quite traditional and who conform strictly to gender scripts about how the two genders should behave' or 'non-traditional who deviate radically'. They were then asked to write down five name-combinations for their imaginary couple. Participants named the imagined 'traditional couples' men-first more often than chance, but this effect was not seen for the naming of 'non-traditional' couples.