Yes, he was Drew's great uncle. John, Lionel, and Ethel Barrymore were all siblings and were all great film and stage actors from the late 1920s-the mid 1950s. John Barrymore, and the younger brother...
Yes
Yes Ethel Blythe Barrymore is related to drew barrymore. drew even had he middle name
no she isnt.
There is no relation between Elisabeth Moss and Drew Barrymore.