Drain cherries. Reserve syrup and add water to make 1 cup liquid. Bring to boil. Remove from heat. Add cherry gelatin. Stir well. With fork break up jellied cranberry sauce. Stir into cherry gelatin until smooth. Stir in drained cherries. Turn into a 9x9x2" or 11x7 glass dish. Chill. Meanwhile, dissolve lemon gelatin in 1 cup boiling water. Beat cream cheese and mayonnaise. Gradually add lemon gelatin. Stir in crushed pineapple. Chill until partially set. Whip cream. Fold into lemon mixture with marshmallows. Spread on top of cherry gelatin. Sprinkle with chopped nuts. Cover and chill until firm.