Possible Clues:

• Builder taking issue with master
• A boy follows lead of master craftsman
• Master builder of historical and detective novels
• Parent and child might make a 26 down for you
• How parent and child together work with stone
• Builder employing parent and child
• How parent and child contribute to the build-up
• Stone-carvers Mother and Child
• Parent and child are together in the building business
• A worker in stone, may be free