Interesting speculation, but there are over 30 instances of אדניו in scripture that refer to "his master" and not "his master s " - Gen 24:9, 10 (x2), 39:2, 3, 7, 8, 16, 19, 40:7; Exod 21:4, 6 (x2); Deut 23:16 (x2)... etc., etc. I could only find one instance that actually follow...