Law Office of Margaret M. Priesmeyer-Masinter San Antonio Family Law Lawyer | Texas Estate Planning Attorney | Bexar County Real Estate Law Firm At the Law Office of Margaret M. Priesmeyer-Masinter, we devote our practice to family law, estate planning, probate and estate administration, and real estate law. From our offices in San Antonio, we represent clients throughout the area, including New Braunfels, Seguin, San Marcos, Boerne, and throughout Bexar, Kendall, Gillespie, Comal, Guadalupe, and Bandera Counties.