| SURNAME | STATE | RESEARCHER | ||
| GAKERLIN | Wales | J. Simonson | ||
| GAKERLIN | MD | J. Simonson | ||
| GALE | NY | M. Rollins (Kulstad) | ||
| GALE | OH | M. Rollins (Kulstad) | ||
| GALLOWAY | PA | A. Frandsen | ||
| GALLOWAY | OH | A. Frandsen | ||
| GARRIQUES | PA | A. Brunckhorst | ||
| GARRIQUES | VA | A. Brunckhorst | ||
| GATER | England | D. Perkins | ||
| GEMBE | Germany | N. McClellan | ||
| GEORGE | England | C. Stowe | ||
| GERLACH | Germany | D. Marvin | ||
| GERLACH | CA | D. Marvin | ||
| GERRARD | England | A. Reilly | ||
| GIBBINS | VA | A. Brunckhorst | ||
| GIBBS | NY | K. Sherron | ||
| GIBBS | CT | K. Sherron | ||
| GIBBS | IL | K. Sherron | ||
| GIBBS | England | C. Stowe | ||
| GIBBS | MA | C. Stowe | ||
| GIBSON | PA | A. Brunckhorst | ||
| GIBSON / GIBBSON | NH | B. Hagan | ||
| GIBSON / GIBBSON | PA | B. Hagan | ||
| GIBSON / GIBBSON | NY | B. Hagan | ||
| GILBERT | MD | J. Vaughn | ||
| GILBERT | SC | J. Vaughn | ||
| GILBERT | AL | J. Vaughn | ||
| GILBERT | TX | J. Vaughn | ||
| GILBERT | NY | D. Perkins | ||
| GILBERT | CT | D. Perkins | ||
| GILBERT | England | D. Perkins | ||
| GILCHRIST | VA | N. McClellan | ||
| GILCHRIST | MD | N. McClellan | ||
| GILCHRIST | OH | N. McClellan | ||
| GILCHRIST | IN | N. McClellan | ||
| GILLIES | NY | B. Marsh | ||
| GILPIN | VA | A. Brunckhorst | ||
| GILPIN | PA | A. Brunckhorst | ||
| GILPIN | MD | A. Brunckhorst | ||
| GISWEIN/GIESWEIN | Russia | P. Minch | ||
| GISWEIN/GIESWEIN | Germany | P. Minch | ||
| GLEASON | MA | B. Merrill-Bailey | ||
| GLENN | VA | E. Rogers | ||
| GOETZ | Germany | N. McClellan | ||
| GOETZ | NJ | N. McClellan | ||
| GOETZ | CA | N. McClellan | ||
| GOLBERG | IA | B. Brahms | ||
| GOLBERG | CA | B. Brahms | ||
| GOLBERGSHTAT | Ukraine | B. Brahms | ||
| GOLDEN | NS | B. Marsh | ||
| GOLDEN | NJ | B. Marsh | ||
| GOLDEN / GOLDING | KY | G. Gibbel | ||
| GOLDEN / GOLDING | IN | G. Gibbel | ||
| GOODWIN/GOOWYN | MA | C. Scott | ||
| GOODWIN/GOOWYN | Eng | C. Scott | ||
| GORBY | England | J. Cupp | ||
| GORBY | PA | J. Cupp | ||
| GORBY | OH | J. Cupp | ||
| GORBY | WVA | J. Cupp | ||
| GRAHAM | OH | P. King | ||
| GREEN / GREENE | VT | B. Hagan | ||
| GREEN / GREENE | NH | B. Hagan | ||
| GREEN / GREENE | NY | B. Hagan | ||
| GREEN / GREENE | CT | B. Hagan | ||
| GREEN / GREENE | MA | B. Hagan | ||
| GREENE | SC | B. Merrill-Bailey | ||
| GREGG | Scotland | N. McClellan | ||
| GREGG | Ireland | N. McClellan | ||
| GREGG | NH | N. McClellan | ||
| GREGG | NY | N. McClellan | ||
| GREGG | CA | N. McClellan | ||
| GREGORY | England | R. Jauch | ||
| GRIFFEN/GRIFFIN | Wales | A. Reilly | ||
| GRIFFEN/GRIFFIN | VA | A. Reilly | ||
| GRIFFEN/GRIFFIN | NC | A. Reilly | ||
| GRIFFEN/GRIFFIN | KY | A. Reilly | ||
| GRIMES | OH | R. Jauch | ||
| GRISHAM/GRESHAM | NC | A. Reilly | ||
| GRISHAM/GRESHAM | IN | A. Reilly | ||
| GROMAN | Sweden | B. Merrill-Bailey | ||
| GROVES | VA | N. McClellan | ||
| GROVES | TN | N. McClellan | ||
| GROVES | OH | N. McClellan | ||
| GROVES | IN | N. McClellan | ||
| GROVES | CA | N. McClellan | ||
| GULLEY | England | J. Simonson | ||
| GUYER | PA | K. Sherron | ||
| GUYER | IL | K. Sherron | ||
| GWARTNEY | IN | A. Brunckhorst | ||
| GYLLAND | WA | B. Marsh |