There is a resemblance to 'Champney's Pink Cluster'. That said, there are thousands of rose cultivars with even antique ones still in existence being quite numerous. In addition there wasn't as much variety to them before modern roses were developed. So that kinds similar to one another were named and dispersed. And there are not a few found old garden roses being grown these days whose original identities have never been retrieved.

Where is the rose growing? Location will help. Central Texas?