In Latvian mythology, Mahte ("mother") was an epithet applied to some sixty-seventy goddesses. They were clearly distinct goddesses in most or all case, so the term definitely referred to the mother-goddess of specific phenomena.
... 3 - Sally Rand[?], dancer (+ 1979)
April 7 - Ralph Bunche[?], diplomat, winner of the Nobel Peace Prize
April 16 - Fifi D'Orsay, actress (+ 1983)
April 22 - ...