A fence support system includes brackets that may be attached to t-posts. The system includes modular brackets that may be configured in either a single or dual embodiment for attachment to components on multiple sides of the brackets. The bracket may also be configured with a round plate situated atop the body portion, such that the top of the bracket may be attached to components at a variety of angles. The bracket may be configured in large and small embodiments. The system includes an adjustable brace assembly configured to extend between brackets so as to support respective posts. The bracketry provides a means to hang gates from t-posts, create and support field fence corners and mid fence span supports using common t-posts, including fence intersections that are at non-90-degree angles, and other applications.