Hi Scott,
Thank you for your interest in Syncfusion products.
We have developed a sample as per your requirement with the custom data in the column is sorted. Please download the sample from the below link:
[Sample Link]
http://www.syncfusion.com/uploads/redirect.aspx?file=GCD-TrivialCellBindingObject-Issue-71654_65e6fc09.zip&team=developmentLet us know if you need any other details.
Regards,
Jeraldes J