INDIANAPOLIS—A judge declared a mistrial in the case of a man charged in the fatal 2015 shooting of an Indianapolis pastor’s wife after learning some jurors knew she had been pregnant — a fact defense attorneys had successfully moved to keep from the jury. Marion County Judge Grant Hawkins declared the mistrial Monday on the first day of Larry Jo Taylor Jr.’s murder trial in Amanda Blackburn’s killing. Hawkins told The Indianapolis Star more than one juror had learned “Ms. Blackburn was pregnant at the time of her death” even though jurors were not supposed to know about her pregnancy. The court will seat a new jury for a subsequent trial. Blackburn, 28, was fatally shot in November 2015 in her Indianapolis home during a home invasion. She was 12 weeks pregnant with her second child. Taylor, 24, is one of three men who was charged in connection with her …