Grammer might be a made up name.

my ex's family had a made up family name: SIAS.. it was shortened from the original. Sias is not a common name, and there is a great deal of evidence, that all of the Sias's in US are related to original, a man who married a Mayflower passenger, (she was a child at the time of the crossing, he came later)-- several volumes on The Sias Family in America have all the boring details
(maybe Dr Bill, who has an interest in geneolgy might find in enjoyable reading, I don't. i know about, because of a family connection.)

the point is, most of Grammer's might be congretated in one or two states.. where the Grammer clan first started.