I don't know if you are aware but we have a DNA project for the Cruse surname (and other related variants). This line is not currently represented. If any male Cruses are interested in taking part you can find further information on the project website:
http://www.familytreedna.com/public/CruwysDNAA lot of Cruse lines are now starting to come together with the DNA testing. It would be interesting to find out where this line fits into the bigger picture. Coincidentally the testing company are based in Houstan, Texas.