Help with some mystery pieces please

This is a good solid pot or vase

But who is Marlene ?

A really lovely mug, at first I thought the flowers were a transfer, but they look hand painted

Who is J Bloomfield ?
This is a well made pot, but what a strange mark!

The mark looks like a pair of sunnies

Or perhaps  a BL ?

Lastly, an oil burner

But who has the initials JF ?