HOUSTON, Oct. 28 - When she was growing up in a small town in southern Colorado, an area where her ancestors settled centuries ago when it was on the fringes of the northern frontier of New Spain, Bernadette Gonzalez always thought some of the stories about her family were unusual, if not bizarre. Her grandmother, for instance, refused to travel on Saturday and would use a specific porcelain basin to drain blood out of meat before she cooked it. In one tale that particularly puzzled Ms. Gonzalez, 52, her grandfather called for a Jewish doctor to circumcise him while he...