Answers are all properties or people connected to National Trust properties in some way, (owners, donors, family, designers etc
5) A fish and the mountain stream where it might swim(9)
15) Sweetbread, not overlooking Rio (7,4)
34) Belgian boy detective by the Humber (10)
48) No saint in Miss Gwynn at the monastery (7,6)
49) Give value to the letters played in Scrabble (10,5)