Where a broker employed by a married woman to procure a lessee on her separate real estate procured a lessee willing to lease the property on the terms specified, that she must execute a lease in which her husband joins so as to vest a marketable title, and where she fails to do so, and the lessee refuses to take the lease executed by her alone, the broker may, nevertheless, recover his commission. Ennis v. Enger, 133 S. W. 850, 152 Mo. App. 493.