Late to the party, but I agree with GR2.
The first name is definitely Archd. The superscript d is very small.
For the surname, you have Mc, then a gap, then a very elaborate capital K, with a ‘kick’ descending below the line.
For the rest of the name, you have to appreciate that what looks like a tail descending below the line is actually part of the looped top of the L from Son in Law in the line below, but part of the pen-stroke is missing. With your mind's eye provide the missing part of that loop, and you will see how the rest of the surname in the line above could easily be written ...innon.