We have added a forum for Members-Only. You will need to be logged in as a member in order to see the content. Currently, we have topics for Surnames that members have indicated they are interested in researching in Butler County. Please use this to connect to other members who are researching the same surname that you are interested in. When posting your information, please post as much information as possible to make it more obvious to others who you are researching. Currently the surname topics include:
| Applegate | Archard/Archerd | Ariens | Armstrong |
| Baird | Baker | Ball | Barkaloo |
| Bauerle | Bergen | Braunstein | Brelsford |
| Bunnell | Casey | Caskey | Clark |
| Colby | Cone | Cook | Cooper |
| Cory / Corey | Coulson | Crawford | Curtis |
| Davis | Decker | Dennis / Denness | DePinal |
| Doll | Dörner (Turner) | Doty | Driver |
| Elkins | Engberson | Erhart / Aerhart | Farr |
| Feucht (Feight) | Fox | Gerschnabel | Getz |
| Glass | Goldhoff | Gray | Gurr |
| Halter | Harris / Harrison / Hairson | Hendrickson | Hill |
| Holley | Hornaday | Howe | Hunter |
| Hutchin | Jones | Kämmlein | Kerchenbaum |
| Kohler | Kurtz / Curts | Lackey | Langemeyer |
| Latham | Lindley | Lintner | Littlejohn |
| Logue | Long | Longstreet | Maggart |
| McAuley | McCloskey | Miller | Mills |
| Moon | Mueller | Noble | Overpeck |
| Pottenger | Potter | Reed | Reily |
| Rinehart / Rhinehart | Robbins | Rupp | Ruppert |
| Sample | Schear | Schürfranz | Schwartz |
| Schwenn | Scudder | Seachrist / Secrist / Secrest | Sherard |
| Smith | Smoyer | Sparks | Speer / Spear / Spier |
| Stein | Stewart | Stockton | Symmes |
| Ticen | Totten | Tressler | Tucker |
| Vail | Van Sickel | Vanness | Vaughn |
| Vogellehner | Walker | Warner | Warren |
| Watson | Webber | Wehr | West |
| Whipple | White | Withrow | Woodruff |
| Yitzhak / Itzak / Izak |