Possible Clues:

• Of good stock
• Having good manners
• Properly brought up
• Brought up with excellent manners, say
• Gentlemanly, offering source of water and food, we hear
• Of good stock or manners
• Brought up after spring having good manners
• Refined and healthy bishop looking flushed
• Being high-class, we will shortly have 5 down, by the sound of it
• Healthy food, we hear, from good stock