Possible Clues:

• Lodger, perhaps unattached, meets mother with child
• Member of society that's dispensed with forenames
• Lodger perhaps gets on the house with couple of relatives
• One in lodge scrawling forenames
• Society member's unusual forenames
• Fearsome arcane clan's ultimate secret society member
• Member of mutual help fraternity
• Complementary to pair of relatives from lodge
• Man with secret order to release mother and child
• Forenames (anag)